diff --git a/backend/app/Console/Kernel.php b/backend/app/Console/Kernel.php
index c43d22d..1482174 100644
--- a/backend/app/Console/Kernel.php
+++ b/backend/app/Console/Kernel.php
@@ -4,7 +4,6 @@ namespace App\Console;
 
 use Illuminate\Console\Scheduling\Schedule;
 use Illuminate\Foundation\Console\Kernel as ConsoleKernel;
-use App\Jobs\IncrementAvailabilityMinutesJob;
 use App\Jobs\UpdateAvailabilityWithSchedulesJob;
 
 class Kernel extends ConsoleKernel
@@ -14,7 +13,6 @@ class Kernel extends ConsoleKernel
      */
     protected function schedule(Schedule $schedule): void
     {
-        $schedule->job(new IncrementAvailabilityMinutesJob)->everyMinute();
         $schedule->job(new UpdateAvailabilityWithSchedulesJob)->everyThirtyMinutes();
     }
 
diff --git a/backend/app/Http/Controllers/AvailabilityController.php b/backend/app/Http/Controllers/AvailabilityController.php
index d24bdf1..c21fbc7 100644
--- a/backend/app/Http/Controllers/AvailabilityController.php
+++ b/backend/app/Http/Controllers/AvailabilityController.php
@@ -4,6 +4,7 @@ namespace App\Http\Controllers;
 
 use Illuminate\Http\Request;
 use App\Models\User;
+use App\Utils\Availability;
 
 class AvailabilityController extends Controller
 {
@@ -24,22 +25,11 @@ class AvailabilityController extends Controller
             $user = $request->user();
         }
 
-        $user->available = $request->input("available", false);
-        $user->availability_manual_mode = true;
-        $user->save();
-
-        return [
-            "updated_user_id" => $user->id,
-            "updated_user_name" => $user->name
-        ];
+        return Availability::updateAvailability($user, $request->input("available", false));
     }
 
     public function updateAvailabilityManualMode(Request $request)
     {
-        $user = $request->user();
-        $user->availability_manual_mode = $request->input("manual_mode", false);
-        $user->save();
-
-        return;
+        return Availability::updateAvailabilityManualMode($request->user(), $request->input("manual_mode", false));
     }
 }
diff --git a/backend/app/Jobs/IncrementAvailabilityMinutesJob.php b/backend/app/Jobs/IncrementAvailabilityMinutesJob.php
deleted file mode 100644
index 356c772..0000000
--- a/backend/app/Jobs/IncrementAvailabilityMinutesJob.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-namespace App\Jobs;
-
-use Illuminate\Bus\Queueable;
-use Illuminate\Contracts\Queue\ShouldQueue;
-use Illuminate\Foundation\Bus\Dispatchable;
-use Illuminate\Queue\InteractsWithQueue;
-use Illuminate\Queue\SerializesModels;
-use Illuminate\Support\Facades\DB;
-
-class IncrementAvailabilityMinutesJob implements ShouldQueue
-{
-    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
-
-    /**
-     * Create a new job instance.
-     */
-    public function __construct()
-    {
-        //
-    }
-
-    /**
-     * Execute the job.
-     */
-    public function handle(): void
-    {
-        DB::table('users')
-          ->where('available', 1)
-          ->where('banned', 0)
-          ->increment('availability_minutes');
-    }
-}
diff --git a/backend/app/Models/User.php b/backend/app/Models/User.php
index c10f7a7..3f9e4be 100644
--- a/backend/app/Models/User.php
+++ b/backend/app/Models/User.php
@@ -56,6 +56,7 @@ class User extends Authenticatable
     protected $casts = [
         'email_verified_at' => 'datetime',
         'last_access' => 'datetime',
+        'last_availability_change' => 'datetime',
     ];
 
     /**
diff --git a/backend/app/Telegram/WebhookController.php b/backend/app/Telegram/WebhookController.php
index df22752..f5c5e81 100644
--- a/backend/app/Telegram/WebhookController.php
+++ b/backend/app/Telegram/WebhookController.php
@@ -5,6 +5,8 @@ namespace App\Telegram;
 use App\Models\TelegramBotLogins;
 use App\Models\User;
 
+use App\Utils\Availability;
+
 class WebhookController extends
     \DefStudio\Telegraph\Handlers\WebhookHandler
 {
@@ -118,9 +120,8 @@ class WebhookController extends
             $this->reply("⚠️ Il tuo account Allerta non è collegato con Telegram.\nPer favore, eseguire il comando <strong><i>/start</i></strong>.");
             return;
         }
-        $user->available = true;
-        $user->availability_manual_mode = true;
-        $user->save();
+        
+        Availability::updateAvailability($user, true);
         $this->reply("Disponibilità aggiornata con successo.\nOra sei <b>operativo</b>.");
     }
 
@@ -130,9 +131,8 @@ class WebhookController extends
             $this->reply("⚠️ Il tuo account Allerta non è collegato con Telegram.\nPer favore, eseguire il comando <strong><i>/start</i></strong>.");
             return;
         }
-        $user->available = false;
-        $user->availability_manual_mode = true;
-        $user->save();
+        
+        Availability::updateAvailability($user, false);
         $this->reply("Disponibilità aggiornata con successo.\nOra sei <b>non operativo</b>.");
     }
 
@@ -142,8 +142,8 @@ class WebhookController extends
             $this->reply("⚠️ Il tuo account Allerta non è collegato con Telegram.\nPer favore, eseguire il comando <strong><i>/start</i></strong>.");
             return;
         }
-        $user->availability_manual_mode = false;
-        $user->save();
+        
+        Availability::updateAvailabilityManualMode($user, false);
         $this->reply("Programmazione oraria <b>abilitata</b>.\nPer disabilitarla (e tornare in modalità manuale), cambiare la disponbilità usando i comandi \"/attiva\" e \"/disattiva\"");
     }
 
diff --git a/backend/app/Utils/Availability.php b/backend/app/Utils/Availability.php
new file mode 100644
index 0000000..c01ca14
--- /dev/null
+++ b/backend/app/Utils/Availability.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace App\Utils;
+
+use App\Models\User;
+
+class Availability {
+    public static function updateAvailability(User|int $id, bool $available)
+    {
+        if(is_int($id)) {
+            $user = User::find($id);
+        } else {
+            $user = $id;
+        }
+
+        $last_availability = $user->available;
+        $last_availability_change = $user->last_availability_change;
+        $new_last_availability_change = now();
+
+        //Increment only if the user was available and now is not
+        if(!is_null($last_availability_change) && $last_availability && !$available) {
+            $diff = $new_last_availability_change->diffInMinutes($last_availability_change);
+            if($diff > 0) $user->availability_minutes += $diff;
+        }
+
+        $user->available = $available;
+        $user->availability_manual_mode = true;
+        $user->last_availability_change = $new_last_availability_change;
+        $user->save();
+
+        return [
+            "updated_user_id" => $user->id,
+            "updated_user_name" => $user->name
+        ];
+    }
+
+    public static function updateAvailabilityManualMode(User|int $id, bool $manual_mode)
+    {
+        if(is_int($id)) {
+            $user = User::find($id);
+        } else {
+            $user = $id;
+        }
+        $user->availability_manual_mode = $manual_mode;
+        $user->save();
+
+        return;
+    }
+}
\ No newline at end of file
diff --git a/backend/database/migrations/2023_08_29_163731_add_last_availability_change_column.php b/backend/database/migrations/2023_08_29_163731_add_last_availability_change_column.php
new file mode 100644
index 0000000..d935340
--- /dev/null
+++ b/backend/database/migrations/2023_08_29_163731_add_last_availability_change_column.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->timestamp('last_availability_change')->nullable()->after('availability_manual_mode');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->dropColumn('last_availability_change');
+        });
+    }
+};