работает ?

SushiBar/SushiBarBusinessLogic/BusinessLogics/OrderLogic.cs

@@ -84,13 +84,13 @@ namespace SushiBarBusinessLogic.BusinessLogics
             {
                 throw new ArgumentNullException(nameof(model));
             }
-            if (viewModel.Status + 1 != newStatus)
+            if (viewModel.Status + 1 != newStatus && viewModel.Status != OrderStatus.Ожидание)
             {
                 _logger.LogWarning("Status update to " + newStatus.ToString() + " operation failed. Order status incorrect.");
                 return false;
             }
             model.Status = newStatus;
-            if (model.Status == OrderStatus.Готов) 
+            if (model.Status == OrderStatus.Готов || viewModel.Status == OrderStatus.Ожидание) 
             { 
                 model.DateImplement = DateTime.Now;
                 var sushi = _sushiStorage.GetElement(new() { Id = viewModel.SushiId });
@@ -100,7 +100,8 @@ namespace SushiBarBusinessLogic.BusinessLogics
                 }
                 if (!_shopLogic.AddSushi(sushi, viewModel.Count))
                 {
-                    throw new Exception($"AddSushi operation failed. Shop is full.");
+                    model.Status = OrderStatus.Ожидание;
+                    _logger.LogWarning($"AddSushi operation failed. Shop is full.");
                 }
             }
             else

SushiBar/SushiBarBusinessLogic/BusinessLogics/ShopLogic.cs

@@ -182,6 +182,8 @@ namespace SushiBarBusinessLogic.BusinessLogics
             foreach (var shop in _shopStorage.GetFullList())
             {
                 int countFree = shop.MaxCountSushi - shop.ListSushi.Select(x => x.Value.Item2).Sum();
+                if (countFree <= 0)
+                    continue;
                 if (countFree < count)
                 {
                     if (!AddSushiInShop(new() { Id = shop.Id }, model, countFree))

SushiBar/SushiBarBusinessLogic/BusinessLogics/WorkModeling.cs

@@ -54,6 +54,9 @@ namespace SushiBarBusinessLogic.BusinessLogics
             {
                 return;
             }
+
+            await RunOrderAfterWaiting(implementer);
+
             await RunOrderInWork(implementer);
 
             await Task.Run(() =>
@@ -140,5 +143,47 @@ namespace SushiBarBusinessLogic.BusinessLogics
                 throw;
             }
         }
+        
+        /// <summary>
+        /// Ищем заказ, который в ожидании
+        /// </summary>
+        /// <param name="implementer"></param>
+        /// <returns></returns>
+        private async Task RunOrderAfterWaiting(ImplementerViewModel implementer)
+        {
+            if (_orderLogic == null || implementer == null)
+            {
+                return;
+            }
+            try
+            {
+                var order = await Task.Run(() => _orderLogic.ReadElement(new OrderSearchModel
+                {
+                    ImplementerId = implementer.Id,
+                    OrderStatus = OrderStatus.Ожидание
+                }));
+                if (order == null)
+                {
+                    return;
+                }
+                // доделываем работу
+                _logger.LogDebug("DoWork. Worker {Id} finish order {Order}", implementer.Id, order.Id);
+                _orderLogic.FinishOrder(new OrderBindingModel
+                {
+                    Id = order.Id
+                });
+                // отдыхаем
+                Thread.Sleep(implementer.Qualification * _rnd.Next(10, 100));
+            }
+            catch (InvalidOperationException ex)
+            {
+                _logger.LogWarning(ex, "Error try get work");
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error while do work");
+                throw;
+            }
+        }
     }
 }

SushiBar/SushiBarDataModels/Enums/OrderStatus.cs

@@ -7,5 +7,6 @@
         Выполняется = 1,
         Готов = 2,
         Выдан = 3,
+        Ожидание = 4
     }
 }