diff --git a/LawFirm/AbstractLawFirmBusinessLogic/BusinessLogic/OrderLogic.cs b/LawFirm/AbstractLawFirmBusinessLogic/BusinessLogic/OrderLogic.cs
index 8ef6fe3..aca7bdc 100644
--- a/LawFirm/AbstractLawFirmBusinessLogic/BusinessLogic/OrderLogic.cs
+++ b/LawFirm/AbstractLawFirmBusinessLogic/BusinessLogic/OrderLogic.cs
@@ -17,8 +17,9 @@ namespace AbstractLawFirmBusinessLogic.BusinessLogic
     {
         private readonly ILogger _logger;
         private readonly IOrderStorage _orderStorage;
+		static readonly object locker = new object();
 
-        public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage)
+		public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage)
         {
             _logger = logger;
             _orderStorage = orderStorage;
@@ -90,7 +91,10 @@ namespace AbstractLawFirmBusinessLogic.BusinessLogic
 
         public bool TakeOrderInWork(OrderBindingModel model)
         {
-            return ChangeStatus(model, OrderStatus.Выполняется);
+            lock (locker)
+            {
+                return ChangeStatus(model, OrderStatus.Выполняется);
+            }
         }
 
         public bool FinishOrder(OrderBindingModel model)