diff --git a/app/Models/Biography.php b/app/Models/Biography.php
index 48a3ad3..83eb9c8 100644
--- a/app/Models/Biography.php
+++ b/app/Models/Biography.php
@@ -25,4 +25,9 @@ public function user(): BelongsTo
     {
         return $this->belongsTo(User::class);
     }
+
+    public function cashier(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'cashier_id');
+    }
 }
diff --git a/app/Models/Transaction.php b/app/Models/Transaction.php
index ffac151..a58668e 100644
--- a/app/Models/Transaction.php
+++ b/app/Models/Transaction.php
@@ -17,6 +17,7 @@ class Transaction extends Model
 
     protected $fillable = [
         'user_id',
+        'cashier_id',
         'barbershop_id',
         'customer_id',
         'service_id',
@@ -47,6 +48,11 @@ public function user(): BelongsTo
         return $this->belongsTo(User::class);
     }
 
+    public function cashier(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'cashier_id');
+    }
+
     public function barbershop(): BelongsTo
     {
         return $this->belongsTo(Barbershop::class);
diff --git a/database/migrations/2024_12_23_203227_add_cashier_id_to_transactions.php b/database/migrations/2024_12_23_203227_add_cashier_id_to_transactions.php
new file mode 100644
index 0000000..47f3dfa
--- /dev/null
+++ b/database/migrations/2024_12_23_203227_add_cashier_id_to_transactions.php
@@ -0,0 +1,39 @@
+<?php
+
+use App\Models\User;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('transactions', function (Blueprint $table) {
+            $table->foreignId('cashier_id')
+                ->after('user_id')
+                ->nullable()
+                ->constrained('users')
+                ->cascadeOnDelete();
+        });
+
+        $getFirstCashier = User::where('role_id', 4)->first();
+        DB::table('transactions')->update(['cashier_id' => $getFirstCashier->id]);
+
+        Schema::table('transactions', function (Blueprint $table) {
+            $table->foreignId('cashier_id')->nullable(false)->change();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('transactions', function (Blueprint $table) {
+            $table->dropForeign(['cashier_id']);
+            $table->dropColumn('cashier_id');
+        });
+    }
+};