diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/EcoJobsAPIImpl.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/EcoJobsAPIImpl.kt
deleted file mode 100644
index 1e28794..0000000
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/EcoJobsAPIImpl.kt
+++ /dev/null
@@ -1,36 +0,0 @@
-package com.willfp.ecojobs
-
-import com.willfp.ecojobs.api.EcoJobsAPI
-import com.willfp.ecojobs.jobs.Job
-import com.willfp.ecojobs.jobs.activeJob
-import com.willfp.ecojobs.jobs.getJobLevel
-import com.willfp.ecojobs.jobs.getJobProgress
-import com.willfp.ecojobs.jobs.getJobXP
-import com.willfp.ecojobs.jobs.getJobXPRequired
-import com.willfp.ecojobs.jobs.giveJobExperience
-import com.willfp.ecojobs.jobs.hasJob
-import org.bukkit.OfflinePlayer
-import org.bukkit.entity.Player
-
-internal object EcoJobsAPIImpl : EcoJobsAPI {
-    override fun hasJob(player: OfflinePlayer, job: Job) = player.hasJob(job)
-
-    override fun getActiveJob(player: OfflinePlayer): Job? = player.activeJob
-
-    override fun getJobLevel(player: OfflinePlayer, job: Job) = player.getJobLevel(job)
-
-    override fun giveJobExperience(player: Player, job: Job, amount: Double) =
-        player.giveJobExperience(job, amount)
-
-    override fun giveJobExperience(player: Player, job: Job, amount: Double, applyMultipliers: Boolean) =
-        player.giveJobExperience(job, amount, noMultiply = !applyMultipliers)
-
-    override fun getJobProgress(player: OfflinePlayer, job: Job) =
-        player.getJobProgress(job)
-
-    override fun getJobXPRequired(player: OfflinePlayer, job: Job) =
-        player.getJobXPRequired(job)
-
-    override fun getJobXP(player: OfflinePlayer, job: Job) =
-        player.getJobXP(job)
-}
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/api/EcoJobsAPI.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/api/EcoJobsAPI.kt
index f3edfa2..ca65a26 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/api/EcoJobsAPI.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/api/EcoJobsAPI.kt
@@ -1,117 +1,192 @@
+@file:JvmName("EcoJobsAPI")
+
 package com.willfp.ecojobs.api
 
-import com.willfp.ecojobs.EcoJobsAPIImpl
+import com.willfp.eco.core.data.keys.PersistentDataKey
+import com.willfp.eco.core.data.keys.PersistentDataKeyType
+import com.willfp.eco.core.data.profile
+import com.willfp.ecojobs.EcoJobsPlugin
+import com.willfp.ecojobs.api.event.PlayerJobExpGainEvent
+import com.willfp.ecojobs.api.event.PlayerJobJoinEvent
+import com.willfp.ecojobs.api.event.PlayerJobLeaveEvent
+import com.willfp.ecojobs.api.event.PlayerJobLevelUpEvent
 import com.willfp.ecojobs.jobs.Job
+import com.willfp.ecojobs.jobs.Jobs
+import com.willfp.ecojobs.jobs.getNumericalPermission
+import com.willfp.ecojobs.jobs.jobExperienceMultiplier
+import org.bukkit.Bukkit
 import org.bukkit.OfflinePlayer
 import org.bukkit.entity.Player
+import kotlin.math.abs
 
-interface EcoJobsAPI {
-    /**
-     * Get if a player has a job.
-     *
-     * @param player The player.
-     * @param job    The job.
-     * @return If the player has the job unlocked.
-     */
-    fun hasJob(
-        player: OfflinePlayer,
-        job: Job
-    ): Boolean
+private val plugin = EcoJobsPlugin.instance
 
-    /**
-     * Get a player's active job.
-     *
-     * @param player The player.
-     * @return The active job.
-     */
-    fun getActiveJob(
-        player: OfflinePlayer
-    ): Job?
+/*
 
-    /**
-     * Get a player's level of a certain job.
-     *
-     * @param player The player.
-     * @param job    The job.
-     * @return The level.
-     */
-    fun getJobLevel(
-        player: OfflinePlayer,
-        job: Job
-    ): Int
+The old key is around for backwards compatibility with 1.x.x.
 
-    /**
-     * Give job experience to a player.
-     *
-     * @param player The player.
-     * @param job    The job.
-     * @param amount The amount of experience to give.
-     */
-    fun giveJobExperience(
-        player: Player,
-        job: Job,
-        amount: Double
-    )
+ */
 
-    /**
-     * Give job experience to a player.
-     *
-     * @param player           The player.
-     * @param job              The job.
-     * @param amount           The amount of experience to give.
-     * @param applyMultipliers If multipliers should be applied.
-     */
-    fun giveJobExperience(
-        player: Player,
-        job: Job,
-        amount: Double,
-        applyMultipliers: Boolean
-    )
+private val legacyActiveJobKey: PersistentDataKey<String> = PersistentDataKey(
+    plugin.namespacedKeyFactory.create("active_job"), PersistentDataKeyType.STRING, ""
+)
 
-    /**
-     * Get progress to next level between 0 and 1, where 0 is none and 1 is complete.
-     *
-     * @param player The player.
-     * @param job    The job.
-     * @return The progress.
-     */
-    fun getJobProgress(
-        player: OfflinePlayer,
-        job: Job
-    ): Double
+private val activeJobsKey: PersistentDataKey<List<String>> = PersistentDataKey(
+    plugin.namespacedKeyFactory.create("active_jobs"), PersistentDataKeyType.STRING_LIST, listOf()
+)
 
-    /**
-     * Get the experience required to advance to the next level.
-     *
-     * @param player The player.
-     * @param job    The job.
-     * @return The experience required.
-     */
-    fun getJobXPRequired(
-        player: OfflinePlayer,
-        job: Job
-    ): Int
+/**
+ * The job limit.
+ */
+val Player.jobLimit: Int
+    get() {
+        return this.getNumericalPermission("ecojobs.limit", plugin.configYml.getDouble("jobs.limit")).toInt()
+    }
 
-    /**
-     * Get experience to the next level.
-     *
-     * @param player The player.
-     * @param job    The job.
-     * @return The experience.
-     */
-    fun getJobXP(
-        player: OfflinePlayer,
-        job: Job
-    ): Double
+/**
+ * If a player can join a job.
+ */
+fun Player.canJoinJob(job: Job): Boolean {
+    return this.activeJobs.size < this.jobLimit && job !in this.activeJobs && this.hasJob(job)
+}
 
-    companion object {
-        /**
-         * Get the instance of the API.
-         *
-         * @return The API.
-         */
-        @JvmStatic
-        val instance: EcoJobsAPI
-            get() = EcoJobsAPIImpl
+/**
+ * Get if a job is unlocked.
+ */
+fun OfflinePlayer.hasJob(job: Job) = this.getJobLevel(job) > 0
+
+/**
+ * Get if a player has a job active.
+ */
+fun OfflinePlayer.hasJobActive(job: Job) = job in this.activeJobs
+
+/**
+ * Get a player's active jobs.
+ */
+val OfflinePlayer.activeJobs: Collection<Job>
+    get() {
+        if (this.profile.read(legacyActiveJobKey).isNotBlank()) {
+            this.profile.write(activeJobsKey, listOf(this.profile.read(legacyActiveJobKey)))
+            this.profile.write(legacyActiveJobKey, "")
+        }
+
+        return this.profile.read(activeJobsKey).mapNotNull { Jobs.getByID(it) }
+
+    }
+
+/**
+ * Join a job.
+ */
+fun OfflinePlayer.joinJob(job: Job) {
+    val event = PlayerJobJoinEvent(this, job)
+    Bukkit.getPluginManager().callEvent(event)
+
+    if (!event.isCancelled) {
+        this.profile.write(activeJobsKey, this.activeJobs.plus(job).map { it.id })
+    }
+}
+
+/**
+ * Leave a job.
+ */
+fun OfflinePlayer.leaveJob(job: Job) {
+    if (job !in this.activeJobs) {
+        return
+    }
+
+    val event = PlayerJobLeaveEvent(this, job)
+    Bukkit.getPluginManager().callEvent(event)
+
+    if (!event.isCancelled) {
+        this.forceLeaveJob(job)
+    }
+}
+
+/**
+ * Leave a job without checking.
+ */
+fun OfflinePlayer.forceLeaveJob(job: Job) {
+    this.profile.write(activeJobsKey, this.activeJobs.minus(job).map { it.id })
+}
+
+/**
+ * Get the level of a certain job.
+ */
+fun OfflinePlayer.getJobLevel(job: Job) = this.profile.read(job.levelKey)
+
+/**
+ * Set the level of a certain job.
+ */
+fun OfflinePlayer.setJobLevel(job: Job, level: Int) = this.profile.write(job.levelKey, level)
+
+/**
+ * Get current job experience.
+ */
+fun OfflinePlayer.getJobXP(job: Job) = this.profile.read(job.xpKey)
+
+/**
+ * Set current job experience.
+ */
+fun OfflinePlayer.setJobXP(job: Job, xp: Double) = this.profile.write(job.xpKey, xp)
+
+/**
+ * Reset a job.
+ */
+fun OfflinePlayer.resetJob(job: Job) {
+    this.setJobLevel(job, 1)
+    this.setJobXP(job, 0.0)
+}
+
+/**
+ * Get the experience required to advance to the next level.
+ */
+fun OfflinePlayer.getJobXPRequired(job: Job) = job.getExpForLevel(this.getJobLevel(job) + 1)
+
+/**
+ * Get progress to next level between 0 and 1, where 0 is none and 1 is complete.
+ */
+fun OfflinePlayer.getJobProgress(job: Job): Double {
+    val currentXP = this.getJobXP(job)
+    val requiredXP = job.getExpForLevel(this.getJobLevel(job) + 1)
+    return currentXP / requiredXP
+}
+
+/**
+ * Give job experience.
+ */
+@JvmOverloads
+fun Player.giveJobExperience(job: Job, experience: Double, withMultipliers: Boolean = true) {
+    val exp = abs(
+        if (withMultipliers) experience * this.jobExperienceMultiplier
+        else experience
+    )
+
+    val gainEvent = PlayerJobExpGainEvent(this, job, exp, !withMultipliers)
+    Bukkit.getPluginManager().callEvent(gainEvent)
+
+    if (gainEvent.isCancelled) {
+        return
+    }
+
+    this.giveExactJobExperience(job, gainEvent.amount)
+}
+
+/**
+ * Give exact job experience, without calling PlayerJobExpGainEvent.
+ */
+fun Player.giveExactJobExperience(job: Job, experience: Double) {
+    val level = this.getJobLevel(job)
+
+    val progress = this.getJobXP(job) + experience
+
+    if (progress >= job.getExpForLevel(level + 1) && level + 1 <= job.maxLevel) {
+        val overshoot = progress - job.getExpForLevel(level + 1)
+        this.setJobXP(job, 0.0)
+        this.setJobLevel(job, level + 1)
+        val levelUpEvent = PlayerJobLevelUpEvent(this, job, level + 1)
+        Bukkit.getPluginManager().callEvent(levelUpEvent)
+        this.giveExactJobExperience(job, overshoot)
+    } else {
+        this.setJobXP(job, progress)
     }
 }
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/api/event/PlayerJobJoinEvent.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/api/event/PlayerJobJoinEvent.kt
index 95ec4b1..a5b9a3a 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/api/event/PlayerJobJoinEvent.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/api/event/PlayerJobJoinEvent.kt
@@ -8,8 +8,7 @@ import org.bukkit.event.HandlerList
 
 class PlayerJobJoinEvent(
     val player: OfflinePlayer,
-    override val job: Job,
-    val oldJob: Job?
+    override val job: Job
 ) : Event(), Cancellable, JobEvent {
     private var cancelled = false
 
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandGiveXP.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandGiveXP.kt
index b19811f..8e43186 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandGiveXP.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandGiveXP.kt
@@ -5,9 +5,9 @@ import com.willfp.eco.core.command.impl.Subcommand
 import com.willfp.eco.util.StringUtils
 import com.willfp.eco.util.savedDisplayName
 import com.willfp.eco.util.toNiceString
+import com.willfp.ecojobs.api.giveExactJobExperience
+import com.willfp.ecojobs.api.hasJob
 import com.willfp.ecojobs.jobs.Jobs
-import com.willfp.ecojobs.jobs.giveExactJobExperience
-import com.willfp.ecojobs.jobs.hasJob
 import org.bukkit.Bukkit
 import org.bukkit.command.CommandSender
 
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandJobs.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandJobs.kt
index 8d1ffcf..239a6b9 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandJobs.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandJobs.kt
@@ -2,9 +2,9 @@ package com.willfp.ecojobs.commands
 
 import com.willfp.eco.core.EcoPlugin
 import com.willfp.eco.core.command.impl.PluginCommand
+import com.willfp.ecojobs.api.hasJob
 import com.willfp.ecojobs.jobs.Jobs
 import com.willfp.ecojobs.jobs.JobsGUI
-import com.willfp.ecojobs.jobs.hasJob
 import org.bukkit.entity.Player
 import org.bukkit.util.StringUtil
 
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandJoin.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandJoin.kt
index 4806df2..bff59dc 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandJoin.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandJoin.kt
@@ -3,9 +3,11 @@ package com.willfp.ecojobs.commands
 import com.willfp.eco.core.EcoPlugin
 import com.willfp.eco.core.command.impl.Subcommand
 import com.willfp.eco.util.StringUtils
+import com.willfp.ecojobs.api.canJoinJob
+import com.willfp.ecojobs.api.hasJob
+import com.willfp.ecojobs.api.hasJobActive
+import com.willfp.ecojobs.api.joinJob
 import com.willfp.ecojobs.jobs.Jobs
-import com.willfp.ecojobs.jobs.activeJob
-import com.willfp.ecojobs.jobs.hasJob
 import org.bukkit.command.CommandSender
 import org.bukkit.entity.Player
 import org.bukkit.util.StringUtil
@@ -28,12 +30,12 @@ class CommandJoin(plugin: EcoPlugin) : Subcommand(plugin, "join", "ecojobs.comma
             return
         }
 
-        if (player.activeJob == job) {
+        if (player.hasJobActive(job)) {
             player.sendMessage(plugin.langYml.getMessage("job-already-joined"))
             return
         }
 
-        if (player.activeJob != null) {
+        if (!player.canJoinJob(job)) {
             player.sendMessage(plugin.langYml.getMessage("leave-current-job"))
             return
         }
@@ -42,7 +44,8 @@ class CommandJoin(plugin: EcoPlugin) : Subcommand(plugin, "join", "ecojobs.comma
             plugin.langYml.getMessage("joined-job", StringUtils.FormatOption.WITHOUT_PLACEHOLDERS)
                 .replace("%job%", job.name)
         )
-        player.activeJob = job
+
+        player.joinJob(job)
     }
 
     override fun tabComplete(sender: CommandSender, args: List<String>): List<String> {
@@ -51,6 +54,7 @@ class CommandJoin(plugin: EcoPlugin) : Subcommand(plugin, "join", "ecojobs.comma
         }
 
         val completions = mutableListOf<String>()
+
         if (args.isEmpty()) {
             return Jobs.values().filter { sender.hasJob(it) }.map { it.id }
         }
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandLeave.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandLeave.kt
index 9515d49..1ba4a73 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandLeave.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandLeave.kt
@@ -2,24 +2,46 @@ package com.willfp.ecojobs.commands
 
 import com.willfp.eco.core.EcoPlugin
 import com.willfp.eco.core.command.impl.Subcommand
-import com.willfp.ecojobs.jobs.activeJob
+import com.willfp.ecojobs.api.activeJobs
+import com.willfp.ecojobs.api.hasJob
+import com.willfp.ecojobs.api.hasJobActive
+import com.willfp.ecojobs.api.leaveJob
+import com.willfp.ecojobs.jobs.Jobs
 import org.bukkit.command.CommandSender
 import org.bukkit.entity.Player
+import org.bukkit.util.StringUtil
 
 class CommandLeave(plugin: EcoPlugin) : Subcommand(plugin, "leave", "ecojobs.command.leave", true) {
     override fun onExecute(player: CommandSender, args: List<String>) {
         player as Player
 
-        if (player.activeJob == null) {
+        if (args.isEmpty()) {
+            player.sendMessage(plugin.langYml.getMessage("needs-job"))
+            return
+        }
+
+        if (player.activeJobs.isEmpty()) {
             player.sendMessage(plugin.langYml.getMessage("no-job"))
             return
         }
 
-        val job = player.activeJob ?: return
+        val id = args[0]
 
-        player.activeJob = null
+        val job = Jobs.getByID(id)
 
-        if (player.activeJob == null) {
+        if (job == null || !player.hasJob(job)) {
+            player.sendMessage(plugin.langYml.getMessage("invalid-job"))
+            return
+        }
+
+        if (!player.hasJobActive(job)) {
+            player.sendMessage(plugin.langYml.getMessage("not-in-job"))
+            return
+        }
+
+        player.leaveJob(job)
+
+        if (!player.hasJobActive(job)) {
             player.sendMessage(
                 plugin.langYml.getMessage("left-job")
                     .replace("%job%", job.name)
@@ -31,4 +53,27 @@ class CommandLeave(plugin: EcoPlugin) : Subcommand(plugin, "leave", "ecojobs.com
             )
         }
     }
+
+    override fun tabComplete(sender: CommandSender, args: List<String>): List<String> {
+        if (sender !is Player) {
+            return emptyList()
+        }
+
+        val completions = mutableListOf<String>()
+
+        if (args.isEmpty()) {
+            return Jobs.values().filter { sender.hasJobActive(it) }.map { it.id }
+        }
+
+        if (args.size == 1) {
+            StringUtil.copyPartialMatches(
+                args[0],
+                Jobs.values().filter { sender.hasJobActive(it) }.map { it.id },
+                completions
+            )
+            return completions
+        }
+
+        return emptyList()
+    }
 }
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandReset.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandReset.kt
index bb17bbe..a484c6f 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandReset.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandReset.kt
@@ -4,10 +4,10 @@ import com.willfp.eco.core.EcoPlugin
 import com.willfp.eco.core.command.impl.Subcommand
 import com.willfp.eco.util.StringUtils
 import com.willfp.eco.util.savedDisplayName
+import com.willfp.ecojobs.api.forceLeaveJob
+import com.willfp.ecojobs.api.hasJob
+import com.willfp.ecojobs.api.resetJob
 import com.willfp.ecojobs.jobs.Jobs
-import com.willfp.ecojobs.jobs.activeJob
-import com.willfp.ecojobs.jobs.hasJob
-import com.willfp.ecojobs.jobs.resetJob
 import org.bukkit.Bukkit
 import org.bukkit.command.CommandSender
 
@@ -44,9 +44,7 @@ class CommandReset(plugin: EcoPlugin) : Subcommand(plugin, "reset", "ecojobs.com
             return
         }
 
-        if (player.activeJob == job) {
-            player.activeJob = null
-        }
+        player.forceLeaveJob(job)
         player.resetJob(job)
 
         sender.sendMessage(
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandUnlock.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandUnlock.kt
index f6579d7..29b448f 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandUnlock.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/commands/CommandUnlock.kt
@@ -4,9 +4,9 @@ import com.willfp.eco.core.EcoPlugin
 import com.willfp.eco.core.command.impl.Subcommand
 import com.willfp.eco.util.StringUtils
 import com.willfp.eco.util.savedDisplayName
+import com.willfp.ecojobs.api.hasJob
+import com.willfp.ecojobs.api.setJobLevel
 import com.willfp.ecojobs.jobs.Jobs
-import com.willfp.ecojobs.jobs.hasJob
-import com.willfp.ecojobs.jobs.setJobLevel
 import org.bukkit.Bukkit
 import org.bukkit.command.CommandSender
 import org.bukkit.util.StringUtil
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/Job.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/Job.kt
index 43e0b0b..063c8d9 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/Job.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/Job.kt
@@ -16,10 +16,17 @@ import com.willfp.eco.util.NumberUtils
 import com.willfp.eco.util.formatEco
 import com.willfp.eco.util.toNiceString
 import com.willfp.ecojobs.EcoJobsPlugin
+import com.willfp.ecojobs.api.activeJobs
+import com.willfp.ecojobs.api.canJoinJob
 import com.willfp.ecojobs.api.event.PlayerJobExpGainEvent
 import com.willfp.ecojobs.api.event.PlayerJobJoinEvent
 import com.willfp.ecojobs.api.event.PlayerJobLeaveEvent
 import com.willfp.ecojobs.api.event.PlayerJobLevelUpEvent
+import com.willfp.ecojobs.api.getJobLevel
+import com.willfp.ecojobs.api.getJobProgress
+import com.willfp.ecojobs.api.getJobXP
+import com.willfp.ecojobs.api.getJobXPRequired
+import com.willfp.ecojobs.api.jobLimit
 import com.willfp.libreforge.conditions.Conditions
 import com.willfp.libreforge.conditions.ConfiguredCondition
 import com.willfp.libreforge.effects.ConfiguredEffect
@@ -30,14 +37,14 @@ import org.bukkit.Bukkit
 import org.bukkit.OfflinePlayer
 import org.bukkit.entity.Player
 import org.bukkit.inventory.ItemStack
+import java.util.DoubleSummaryStatistics
 import java.util.Objects
 import java.util.concurrent.TimeUnit
 import kotlin.math.abs
+import kotlin.math.max
 
 class Job(
-    val id: String,
-    val config: Config,
-    private val plugin: EcoJobsPlugin
+    val id: String, val config: Config, private val plugin: EcoJobsPlugin
 ) {
     val name = config.getFormattedString("name")
     val description = config.getFormattedString("description")
@@ -45,13 +52,11 @@ class Job(
     val resetsOnQuit = config.getBool("reset-on-quit")
 
     val joinPrice = ConfiguredPrice.create(config.getSubsection("join-price")) ?: ConfiguredPrice(
-        PriceEconomy(config.getDouble("join-price")),
-        ""
+        PriceEconomy(config.getDouble("join-price")), ""
     )
 
     val leavePrice = ConfiguredPrice.create(config.getSubsection("leave-price")) ?: ConfiguredPrice(
-        PriceEconomy(config.getDouble("leave-price")),
-        ""
+        PriceEconomy(config.getDouble("leave-price")), ""
     )
 
     val levelKey: PersistentDataKey<Int> = PersistentDataKey(
@@ -61,9 +66,7 @@ class Job(
     )
 
     val xpKey: PersistentDataKey<Double> = PersistentDataKey(
-        EcoJobsPlugin.instance.namespacedKeyFactory.create("${id}_xp"),
-        PersistentDataKeyType.DOUBLE,
-        0.0
+        EcoJobsPlugin.instance.namespacedKeyFactory.create("${id}_xp"), PersistentDataKeyType.DOUBLE, 0.0
     )
 
     private val levelXpRequirements = listOf(0) + config.getInts("level-xp-requirements")
@@ -79,41 +82,33 @@ class Job(
     private val effects: Set<ConfiguredEffect>
     private val conditions: Set<ConfiguredCondition>
 
-    private val levels = Caffeine.newBuilder()
-        .build<Int, JobLevel>()
-    private val effectsDescription = Caffeine.newBuilder()
-        .build<Int, List<String>>()
-    private val rewardsDescription = Caffeine.newBuilder()
-        .build<Int, List<String>>()
-    private val levelUpMessages = Caffeine.newBuilder()
-        .build<Int, List<String>>()
+    private val levels = Caffeine.newBuilder().build<Int, JobLevel>()
+    private val effectsDescription = Caffeine.newBuilder().build<Int, List<String>>()
+    private val rewardsDescription = Caffeine.newBuilder().build<Int, List<String>>()
+    private val levelUpMessages = Caffeine.newBuilder().build<Int, List<String>>()
 
     private val levelCommands = mutableMapOf<Int, MutableList<String>>()
 
-    private val levelPlaceholders = config.getSubsections("level-placeholders")
-        .map { sub ->
-            LevelPlaceholder(
-                sub.getString("id")
-            ) {
-                NumberUtils.evaluateExpression(
-                    sub.getString("value")
-                        .replace("%level%", it.toString())
-                ).toNiceString()
-            }
+    private val levelPlaceholders = config.getSubsections("level-placeholders").map { sub ->
+        LevelPlaceholder(
+            sub.getString("id")
+        ) {
+            NumberUtils.evaluateExpression(
+                sub.getString("value").replace("%level%", it.toString())
+            ).toNiceString()
         }
+    }
 
     private val jobXpGains = config.getSubsections("xp-gain-methods").mapNotNull {
         Counters.compile(it, "Job $id")
     }
 
     init {
-        config.injectPlaceholders(
-            PlayerStaticPlaceholder(
-                "level"
-            ) { p ->
-                p.getJobLevel(this).toString()
-            }
-        )
+        config.injectPlaceholders(PlayerStaticPlaceholder(
+            "level"
+        ) { p ->
+            p.getJobLevel(this).toString()
+        })
 
         effects = config.getSubsections("effects").mapNotNull {
             Effects.compile(it, "Job $id")
@@ -143,52 +138,45 @@ class Job(
         }
 
         PlayerPlaceholder(
-            plugin,
-            "${id}_percentage_progress"
+            plugin, "${id}_percentage_progress"
         ) {
             (it.getJobProgress(this) * 100).toNiceString()
         }.register()
 
         PlayerPlaceholder(
-            plugin,
-            id
+            plugin, id
         ) {
             it.getJobLevel(this).toString()
         }.register()
 
         PlayerPlaceholder(
-            plugin,
-            "${id}_current_xp"
+            plugin, "${id}_current_xp"
         ) {
             NumberUtils.format(it.getJobXP(this))
         }.register()
 
         PlayerPlaceholder(
-            plugin,
-            "${id}_required_xp"
+            plugin, "${id}_required_xp"
         ) {
             it.getJobXPRequired(this).toString()
         }.register()
 
         PlayerlessPlaceholder(
-            plugin,
-            "${id}_name"
+            plugin, "${id}_name"
         ) {
             this.name
         }.register()
 
         PlayerPlaceholder(
-            plugin,
-            "${id}_level"
+            plugin, "${id}_level"
         ) {
             it.getJobLevel(this).toString()
         }.register()
 
         PlayerPlaceholder(
-            plugin,
-            "${id}_total_players"
+            plugin, "${id}_total_players"
         ) {
-            Bukkit.getOfflinePlayers().count { it.activeJob == this }.toString()
+            Bukkit.getOfflinePlayers().count { this in it.activeJobs }.toString()
         }.register()
     }
 
@@ -208,13 +196,11 @@ class Job(
             }
         }
 
-        this.config.getStrings("level-up-messages.$highestConfiguredLevel")
-            .map {
-                levelPlaceholders.format(it, level)
-            }
-            .map {
-                " ".repeat(whitespace) + it
-            }
+        this.config.getStrings("level-up-messages.$highestConfiguredLevel").map {
+            levelPlaceholders.format(it, level)
+        }.map {
+            " ".repeat(whitespace) + it
+        }
     }
 
     private fun getEffectsDescription(level: Int, whitespace: Int = 0): List<String> = effectsDescription.get(level) {
@@ -229,13 +215,11 @@ class Job(
             }
         }
 
-        this.config.getStrings("effects-description.$highestConfiguredLevel")
-            .map {
-                levelPlaceholders.format(it, level)
-            }
-            .map {
-                " ".repeat(whitespace) + it
-            }
+        this.config.getStrings("effects-description.$highestConfiguredLevel").map {
+            levelPlaceholders.format(it, level)
+        }.map {
+            " ".repeat(whitespace) + it
+        }
     }
 
     private fun getRewardsDescription(level: Int, whitespace: Int = 0): List<String> = rewardsDescription.get(level) {
@@ -250,53 +234,40 @@ class Job(
             }
         }
 
-        this.config.getStrings("rewards-description.$highestConfiguredLevel")
-            .map {
-                levelPlaceholders.format(it, level)
-            }
-            .map {
-                " ".repeat(whitespace) + it
-            }
+        this.config.getStrings("rewards-description.$highestConfiguredLevel").map {
+            levelPlaceholders.format(it, level)
+        }.map {
+            " ".repeat(whitespace) + it
+        }
     }
 
-    private fun getLeaveLore(level: Int, whitespace: Int = 0): List<String> =
-        this.config.getStrings("leave-lore")
-            .map {
-                levelPlaceholders.format(it, level)
-            }
-            .map {
-                " ".repeat(whitespace) + it
-            }
+    private fun getLeaveLore(level: Int, whitespace: Int = 0): List<String> = this.config.getStrings("leave-lore").map {
+        levelPlaceholders.format(it, level)
+    }.map {
+        " ".repeat(whitespace) + it
+    }
 
-    private fun getJoinLore(level: Int, whitespace: Int = 0): List<String> =
-        this.config.getStrings("join-lore")
-            .map {
-                levelPlaceholders.format(it, level)
-            }
-            .map {
-                " ".repeat(whitespace) + it
-            }
+    private fun getJoinLore(level: Int, whitespace: Int = 0): List<String> = this.config.getStrings("join-lore").map {
+        levelPlaceholders.format(it, level)
+    }.map {
+        " ".repeat(whitespace) + it
+    }
 
     fun injectPlaceholdersInto(lore: List<String>, player: Player, forceLevel: Int? = null): List<String> {
-        val withPlaceholders = lore
-            .map {
-                it.replace("%percentage_progress%", (player.getJobProgress(this) * 100).toNiceString())
-                    .replace("%current_xp%", player.getJobXP(this).toNiceString())
-                    .replace("%required_xp%", this.getExpForLevel(player.getJobLevel(this) + 1).let { req ->
-                        if (req == Int.MAX_VALUE) {
-                            plugin.langYml.getFormattedString("infinity")
-                        } else {
-                            req.toNiceString()
-                        }
+        val withPlaceholders = lore.map {
+            it.replace("%percentage_progress%", (player.getJobProgress(this) * 100).toNiceString())
+                .replace("%current_xp%", player.getJobXP(this).toNiceString())
+                .replace("%required_xp%", this.getExpForLevel(player.getJobLevel(this) + 1).let { req ->
+                    if (req == Int.MAX_VALUE) {
+                        plugin.langYml.getFormattedString("infinity")
+                    } else {
+                        req.toNiceString()
                     }
-                    )
-                    .replace("%description%", this.description)
-                    .replace("%job%", this.name)
-                    .replace("%level%", (forceLevel ?: player.getJobLevel(this)).toString())
-                    .replace("%join_price%", this.joinPrice.getDisplay(player))
-                    .replace("%leave_price%", this.leavePrice.getDisplay(player))
-            }
-            .toMutableList()
+                }).replace("%description%", this.description).replace("%job%", this.name)
+                .replace("%level%", (forceLevel ?: player.getJobLevel(this)).toString())
+                .replace("%join_price%", this.joinPrice.getDisplay(player))
+                .replace("%leave_price%", this.leavePrice.getDisplay(player))
+        }.toMutableList()
 
         val processed = mutableListOf<List<String>>()
 
@@ -328,35 +299,30 @@ class Job(
 
         val level = player.getJobLevel(this)
 
-        return ItemStackBuilder(base)
-            .setDisplayName(
-                plugin.configYml.getFormattedString("gui.job-icon.name")
-                    .replace("%level%", level.toString())
-                    .replace("%job%", this.name)
-            )
-            .addLoreLines {
-                injectPlaceholdersInto(plugin.configYml.getStrings("gui.job-icon.lore"), player) +
-                        when (player.activeJob) {
-                            this -> plugin.configYml.getStrings("gui.job-icon.active-lore")
-                            null -> plugin.configYml.getStrings("gui.job-icon.join-lore")
-                            else -> emptyList()
-                        }
+        return ItemStackBuilder(base).setDisplayName(
+            plugin.configYml.getFormattedString("gui.job-icon.name").replace("%level%", level.toString())
+                .replace("%job%", this.name)
+        ).addLoreLines {
+            injectPlaceholdersInto(
+                plugin.configYml.getStrings("gui.job-icon.lore"), player
+            ) + if (player.canJoinJob(this)) {
+                plugin.configYml.getStrings("gui.job-icon.join-lore")
+            } else if (player.activeJobs.size == player.jobLimit) {
+                plugin.configYml.getStrings("gui.job-icon.too-many-jobs-lore")
+            } else {
+                emptyList()
             }
-            .build()
+        }.build()
     }
 
     fun getJobInfoIcon(player: Player): ItemStack {
         val base = baseItem.clone()
-        return ItemStackBuilder(base)
-            .setDisplayName(
-                plugin.configYml.getFormattedString("gui.job-info.active.name")
-                    .replace("%level%", player.getJobLevel(this).toString())
-                    .replace("%job%", this.name)
-            )
-            .addLoreLines {
-                injectPlaceholdersInto(plugin.configYml.getStrings("gui.job-info.active.lore"), player)
-            }
-            .build()
+        return ItemStackBuilder(base).setDisplayName(
+            plugin.configYml.getFormattedString("gui.job-info.active.name")
+                .replace("%level%", player.getJobLevel(this).toString()).replace("%job%", this.name)
+        ).addLoreLines {
+            injectPlaceholdersInto(plugin.configYml.getStrings("gui.job-info.active.lore"), player)
+        }.build()
     }
 
     fun getExpForLevel(level: Int): Int {
@@ -393,8 +359,7 @@ class Job(
 }
 
 private class LevelPlaceholder(
-    val id: String,
-    private val function: (Int) -> String
+    val id: String, private val function: (Int) -> String
 ) {
     operator fun invoke(level: Int) = function(level)
 }
@@ -407,86 +372,12 @@ private fun Collection<LevelPlaceholder>.format(string: String, level: Int): Str
     return process
 }
 
-private val activeJobKey: PersistentDataKey<String> = PersistentDataKey(
-    EcoJobsPlugin.instance.namespacedKeyFactory.create("active_job"),
-    PersistentDataKeyType.STRING,
-    ""
-)
+fun OfflinePlayer.getJobLevelObject(job: Job): JobLevel = job.getLevel(this.getJobLevel(job))
 
-var OfflinePlayer.activeJob: Job?
-    get() = Jobs.getByID(this.profile.read(activeJobKey))
-    set(job) {
-        val oldJob = this.activeJob
-
-        if (oldJob != job) {
-            // Have to check for oldJob too to have null safety
-            if (job == null && oldJob != null) {
-                val event = PlayerJobLeaveEvent(this, oldJob)
-                Bukkit.getPluginManager().callEvent(event)
-
-                if (event.isCancelled) {
-                    return
-                }
-            }
-
-            // Not using else because null safety as well
-            if (job != null) {
-                val event = PlayerJobJoinEvent(this, job, oldJob)
-                Bukkit.getPluginManager().callEvent(event)
-
-                if (event.isCancelled) {
-                    return
-                }
-            }
-        }
-
-        this.profile.write(activeJobKey, job?.id ?: "")
-    }
-
-val OfflinePlayer.activeJobLevel: JobLevel?
-    get() {
-        val active = this.activeJob ?: return null
-        return this.getJobLevelObject(active)
-    }
-
-fun OfflinePlayer.getJobLevel(job: Job): Int =
-    this.profile.read(job.levelKey)
-
-fun OfflinePlayer.setJobLevel(job: Job, level: Int) =
-    this.profile.write(job.levelKey, level)
-
-fun OfflinePlayer.resetJob(job: Job) {
-    this.setJobLevel(job, 1)
-    this.setJobXP(job, 0.0)
+private val expMultiplierCache = Caffeine.newBuilder().expireAfterWrite(10, TimeUnit.SECONDS).build<Player, Double> {
+    it.cacheJobExperienceMultiplier()
 }
 
-fun OfflinePlayer.getJobProgress(job: Job): Double {
-    val currentXP = this.getJobXP(job)
-    val requiredXP = job.getExpForLevel(this.getJobLevel(job) + 1)
-    return currentXP / requiredXP
-}
-
-fun OfflinePlayer.getJobLevelObject(job: Job): JobLevel =
-    job.getLevel(this.getJobLevel(job))
-
-fun OfflinePlayer.hasJob(job: Job): Boolean =
-    this.getJobLevel(job) > 0
-
-fun OfflinePlayer.getJobXP(job: Job): Double =
-    this.profile.read(job.xpKey)
-
-fun OfflinePlayer.setJobXP(job: Job, xp: Double) =
-    this.profile.write(job.xpKey, xp)
-
-fun OfflinePlayer.getJobXPRequired(job: Job): Int =
-    job.getExpForLevel(this.getJobLevel(job) + 1)
-
-private val expMultiplierCache = Caffeine.newBuilder()
-    .expireAfterWrite(10, TimeUnit.SECONDS)
-    .build<Player, Double> {
-        it.cacheJobExperienceMultiplier()
-    }
-
 val Player.jobExperienceMultiplier: Double
     get() = expMultiplierCache.get(this)
 
@@ -507,43 +398,19 @@ private fun Player.cacheJobExperienceMultiplier(): Double {
         return 1.5
     }
 
-    val prefix = "ecojobs.xpmultiplier."
+    return 1 + getNumericalPermission("ecojobs.xpmultiplier", 0.0) / 100
+}
+
+fun Player.getNumericalPermission(permission: String, default: Double): Double {
+    var highest: Double? = null
+
     for (permissionAttachmentInfo in this.effectivePermissions) {
-        val permission = permissionAttachmentInfo.permission
-        if (permission.startsWith(prefix)) {
-            return ((permission.substring(permission.lastIndexOf(".") + 1).toDoubleOrNull() ?: 100.0) / 100) + 1
+        val perm = permissionAttachmentInfo.permission
+        if (perm.startsWith(permission)) {
+            val found = perm.substring(perm.lastIndexOf(".") + 1).toDoubleOrNull() ?: continue
+            highest = max(highest ?: Double.MIN_VALUE, found)
         }
     }
 
-    return 1.0
-}
-
-fun Player.giveJobExperience(job: Job, experience: Double, noMultiply: Boolean = false) {
-    val exp = abs(if (noMultiply) experience else experience * this.jobExperienceMultiplier)
-
-    val gainEvent = PlayerJobExpGainEvent(this, job, exp, !noMultiply)
-    Bukkit.getPluginManager().callEvent(gainEvent)
-
-    if (gainEvent.isCancelled) {
-        return
-    }
-
-    this.giveExactJobExperience(job, gainEvent.amount)
-}
-
-fun Player.giveExactJobExperience(job: Job, experience: Double) {
-    val level = this.getJobLevel(job)
-
-    val progress = this.getJobXP(job) + experience
-
-    if (progress >= job.getExpForLevel(level + 1) && level + 1 <= job.maxLevel) {
-        val overshoot = progress - job.getExpForLevel(level + 1)
-        this.setJobXP(job, 0.0)
-        this.setJobLevel(job, level + 1)
-        val levelUpEvent = PlayerJobLevelUpEvent(this, job, level + 1)
-        Bukkit.getPluginManager().callEvent(levelUpEvent)
-        this.giveExactJobExperience(job, overshoot)
-    } else {
-        this.setJobXP(job, progress)
-    }
+    return highest ?: default
 }
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobLeaveGUI.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobLeaveGUI.kt
index f947f74..7e743bc 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobLeaveGUI.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobLeaveGUI.kt
@@ -9,6 +9,8 @@ import com.willfp.eco.core.gui.slot.MaskItems
 import com.willfp.eco.core.items.Items
 import com.willfp.eco.core.items.builder.ItemStackBuilder
 import com.willfp.eco.util.formatEco
+import com.willfp.ecojobs.api.hasJobActive
+import com.willfp.ecojobs.api.leaveJob
 import org.bukkit.entity.Player
 
 class JobLeaveGUI(
@@ -59,9 +61,9 @@ class JobLeaveGUI(
                     .build()
             }) {
                 onLeftClick { player, _, _, _ ->
-                    player.activeJob = null
+                    player.leaveJob(job)
 
-                    if (player.activeJob == null) {
+                    if (!player.hasJobActive(job)) {
                         player.sendMessage(
                             plugin.langYml.getMessage("left-job")
                                 .replace("%job%", job.name)
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobLevelGUI.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobLevelGUI.kt
index 360cea1..63f7d19 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobLevelGUI.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobLevelGUI.kt
@@ -13,6 +13,7 @@ import com.willfp.eco.core.gui.slot.MaskItems
 import com.willfp.eco.core.items.Items
 import com.willfp.eco.core.items.builder.ItemStackBuilder
 import com.willfp.eco.util.NumberUtils
+import com.willfp.ecojobs.api.getJobLevel
 import com.willfp.ecomponent.components.LevelComponent
 import com.willfp.ecomponent.components.LevelState
 import org.bukkit.entity.Player
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobTriggerXPGainListener.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobTriggerXPGainListener.kt
index daf14d0..0af2c2a 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobTriggerXPGainListener.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobTriggerXPGainListener.kt
@@ -1,5 +1,7 @@
 package com.willfp.ecojobs.jobs
 
+import com.willfp.ecojobs.api.activeJobs
+import com.willfp.ecojobs.api.giveJobExperience
 import com.willfp.libreforge.events.TriggerPreProcessEvent
 import org.bukkit.event.EventHandler
 import org.bukkit.event.Listener
@@ -9,14 +11,16 @@ object JobTriggerXPGainListener : Listener {
     fun handle(event: TriggerPreProcessEvent) {
         val player = event.player
 
-        val job = event.player.activeJob ?: return
+        val jobs = event.player.activeJobs
 
-        val amount = job.getXP(event)
+        for (job in jobs) {
+            val amount = job.getXP(event)
 
-        if (amount <= 0.0) {
-            return
+            if (amount <= 0.0) {
+                return
+            }
+
+            player.giveJobExperience(job, amount)
         }
-
-        player.giveJobExperience(job, amount)
     }
 }
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/Jobs.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/Jobs.kt
index c191a7e..320354b 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/Jobs.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/Jobs.kt
@@ -5,6 +5,7 @@ import com.google.common.collect.HashBiMap
 import com.google.common.collect.ImmutableList
 import com.willfp.eco.core.config.updating.ConfigUpdater
 import com.willfp.ecojobs.EcoJobsPlugin
+import com.willfp.ecojobs.api.getJobLevel
 import org.bukkit.OfflinePlayer
 
 object Jobs {
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobsGUI.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobsGUI.kt
index 4c9a19a..fe2e3a3 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobsGUI.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobsGUI.kt
@@ -11,6 +11,7 @@ import com.willfp.eco.core.gui.slot.MaskItems
 import com.willfp.eco.core.items.Items
 import com.willfp.eco.core.items.builder.ItemStackBuilder
 import com.willfp.ecojobs.EcoJobsPlugin
+import com.willfp.ecojobs.api.getJobLevel
 import com.willfp.ecojobs.jobs.Jobs.unlockedJobs
 import org.bukkit.Material
 import org.bukkit.Sound
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/ResetOnQuitListener.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/ResetOnQuitListener.kt
index 083307b..683d6f1 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/ResetOnQuitListener.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/ResetOnQuitListener.kt
@@ -1,6 +1,7 @@
 package com.willfp.ecojobs.jobs
 
 import com.willfp.ecojobs.api.event.PlayerJobLeaveEvent
+import com.willfp.ecojobs.api.resetJob
 import org.bukkit.event.EventHandler
 import org.bukkit.event.Listener
 
diff --git a/eco-core/core-plugin/src/main/resources/config.yml b/eco-core/core-plugin/src/main/resources/config.yml
index 4127ec6..e1152d4 100644
--- a/eco-core/core-plugin/src/main/resources/config.yml
+++ b/eco-core/core-plugin/src/main/resources/config.yml
@@ -3,6 +3,10 @@
 # by Auxilor
 #
 
+jobs:
+  limit: 3 # The most jobs a player can have at once.
+  # You can set custom limits with the ecojobs.limit.<number> permission
+
 gui:
   rows: 6
 
@@ -80,6 +84,10 @@ gui:
       - ""
       - "&cYou've already joined this job!"
 
+    too-many-jobs-lore:
+      - ""
+      - "&cYou have too many jobs already!"
+
     join-lore:
       - ""
       - "&eClick to join this job!"
diff --git a/eco-core/core-plugin/src/main/resources/lang.yml b/eco-core/core-plugin/src/main/resources/lang.yml
index bb82eb7..9d1007e 100644
--- a/eco-core/core-plugin/src/main/resources/lang.yml
+++ b/eco-core/core-plugin/src/main/resources/lang.yml
@@ -36,6 +36,7 @@ messages:
   leave-current-job: "&cYou must leave your current job before joining a new one!"
   cant-leave-job: "&cYou can't leave the %job%&f job!"
   dont-have-job: "&cYou don't have this job unlocked!"
+  not-in-job: "&cYou are not in this job!"
 
 menu:
   title: "Jobs"