diff --git a/ShipyardBusinessLogic/ImplementerLogic.cs b/ShipyardBusinessLogic/ImplementerLogic.cs
new file mode 100644
index 0000000..7055a1a
--- /dev/null
+++ b/ShipyardBusinessLogic/ImplementerLogic.cs
@@ -0,0 +1,126 @@
+using Microsoft.Extensions.Logging;
+using ShipyardContracts.BindingModels;
+using ShipyardContracts.BusinessLogicContracts;
+using ShipyardContracts.SearchModels;
+using ShipyardContracts.StorageContracts;
+using ShipyardContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ShipyardBusinessLogic
+{
+	public class ImplementerLogic : IImplementerLogic
+	{
+		private readonly ILogger _logger;
+		private readonly IImplementerStorage _implementerStorage;
+		public ImplementerLogic(ILogger<ImplementerLogic> logger, IImplementerStorage implementerStorage)
+		{
+			_logger = logger;
+			_implementerStorage = implementerStorage;
+		}
+		public List<ImplementerViewModel>? ReadList(ImplementerSearchModel? model)
+		{
+			_logger.LogInformation("ReadList. ImplementerFIO:{ClientFIO}. Id:{ Id}", model?.ImplementerFIO, model?.Id);
+			var list = model == null ? _implementerStorage.GetFullList() : _implementerStorage.GetFilteredList(model);
+			if (list == null)
+			{
+				_logger.LogWarning("ReadList return null list");
+				return null;
+			}
+			_logger.LogInformation("ReadList. Count:{Count}", list.Count);
+			return list;
+		}
+		public ImplementerViewModel? ReadElement(ImplementerSearchModel model)
+		{
+			if (model == null)
+			{
+				throw new ArgumentNullException(nameof(model));
+			}
+			_logger.LogInformation("ReadElement. ImplementerFIO:{ImplementerFIO}.Id:{ Id}", model.ImplementerFIO, model.Id);
+			var element = _implementerStorage.GetElement(model);
+			if (element == null)
+			{
+				_logger.LogWarning("ReadElement element not found");
+				return null;
+			}
+			_logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+			return element;
+		}
+		public bool Create(ImplementerBindingModel model)
+		{
+			CheckModel(model);
+			if (_implementerStorage.Insert(model) == null)
+			{
+				_logger.LogWarning("Insert operation failed");
+				return false;
+			}
+			return true;
+		}
+		public bool Update(ImplementerBindingModel model)
+		{
+			CheckModel(model);
+			if (_implementerStorage.Update(model) == null)
+			{
+				_logger.LogWarning("Update operation failed");
+				return false;
+			}
+			return true;
+		}
+		public bool Delete(ImplementerBindingModel model)
+		{
+			CheckModel(model, false);
+			_logger.LogInformation("Delete. Id:{Id}", model.Id);
+			if (_implementerStorage.Delete(model) == null)
+			{
+				_logger.LogWarning("Delete operation failed");
+				return false;
+			}
+			return true;
+		}
+		private void CheckModel(ImplementerBindingModel model, bool withParams =
+	   true)
+		{
+			if (model == null)
+			{
+				throw new ArgumentNullException(nameof(model));
+			}
+			if (!withParams)
+			{
+				return;
+			}
+			if (string.IsNullOrEmpty(model.ImplementerFIO))
+			{
+				throw new ArgumentNullException("Нет ФИО исполнителя",
+			   nameof(model.ImplementerFIO));
+			}
+			if (string.IsNullOrEmpty(model.Password))
+			{
+				throw new ArgumentNullException("Нет пароля клиента",
+			   nameof(model.Password));
+			}
+			if (model.WorkExperience < 0)
+			{
+				throw new ArgumentNullException("Стаж меньше 0",
+			   nameof(model.WorkExperience));
+			}
+			if (model.Qualification < 0)
+			{
+				throw new ArgumentException("Квалификация меньше 0", nameof(model.Qualification));
+			}
+			_logger.LogInformation("Implementer. ImplementerFIO:{ImplementerFIO}." +
+				"Password:{ Password}. WorkExperience:{ WorkExperience}. Qualification:{ Qualification}. Id: { Id} ",
+				model.ImplementerFIO, model.Password, model.WorkExperience, model.Qualification, model.Id);
+			var element = _implementerStorage.GetElement(new ImplementerSearchModel
+			{
+				ImplementerFIO = model.ImplementerFIO,
+			});
+			if (element != null && element.Id != model.Id)
+			{
+				throw new InvalidOperationException("Исполнитель с таким ФИО уже есть");
+			}
+		}
+	}
+}
diff --git a/ShipyardBusinessLogic/OrderLogic.cs b/ShipyardBusinessLogic/OrderLogic.cs
index 0e1cf2b..17309fa 100644
--- a/ShipyardBusinessLogic/OrderLogic.cs
+++ b/ShipyardBusinessLogic/OrderLogic.cs
@@ -17,14 +17,30 @@ namespace ShipyardBusinessLogic
     {
         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;
         }
-
-        public List<OrderViewModel>? ReadList(OrderSearchModel? model)
+		public OrderViewModel? ReadElement(OrderSearchModel model)
+		{
+			if (model == null)
+			{
+				throw new ArgumentNullException(nameof(model));
+			}
+			_logger.LogInformation("ReadElement. Id:{ Id}", model.Id);
+			var element = _orderStorage.GetElement(model);
+			if (element == null)
+			{
+				_logger.LogWarning("ReadElement element not found");
+				return null;
+			}
+			_logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+			return element;
+		}
+		public List<OrderViewModel>? ReadList(OrderSearchModel? model)
         {
             _logger.LogInformation("ReadList. Id:{ Id}", model?.Id);
             var list = model == null ? _orderStorage.GetFullList() :
@@ -53,8 +69,8 @@ namespace ShipyardBusinessLogic
 
         public bool ChangeStatus(OrderBindingModel model, OrderStatus status)
         {
-            CheckModel(model);
-            var element = _orderStorage.GetElement(new OrderSearchModel { Id = model.Id });
+			CheckModel(model, false);
+			var element = _orderStorage.GetElement(new OrderSearchModel { Id = model.Id });
             if (element == null)
             {
                 _logger.LogWarning("Read operation failed");
@@ -66,15 +82,21 @@ namespace ShipyardBusinessLogic
                 throw new InvalidOperationException("Текущий статус заказа не может быть переведен в выбранный");
             }
             model.Status = status;
-            if (model.Status == OrderStatus.Выдан)
+            model.DateImplement = element.DateImplement;
+            if (model.Status == OrderStatus.Готов)
                 model.DateImplement = DateTime.Now;
-            _orderStorage.Update(model);
+			if (element.ImplementerId.HasValue)
+				model.ImplementerId = element.ImplementerId;
+			_orderStorage.Update(model);
             return true;
         }
 
         public bool TakeOrderInWork(OrderBindingModel model)
         {
-            return ChangeStatus(model, OrderStatus.Выполняется);
+            lock (locker)
+            {
+                return ChangeStatus(model, OrderStatus.Выполняется);
+            }
         }
 
         public bool FinishOrder(OrderBindingModel model)
@@ -87,8 +109,7 @@ namespace ShipyardBusinessLogic
             return ChangeStatus(model, OrderStatus.Выдан);
         }
 
-        private void CheckModel(OrderBindingModel model, bool withParams =
-        true)
+        private void CheckModel(OrderBindingModel model, bool withParams = true)
         {
             if (model == null)
             {
diff --git a/ShipyardBusinessLogic/WorkModeling.cs b/ShipyardBusinessLogic/WorkModeling.cs
new file mode 100644
index 0000000..ee8be59
--- /dev/null
+++ b/ShipyardBusinessLogic/WorkModeling.cs
@@ -0,0 +1,137 @@
+using Microsoft.Extensions.Logging;
+using ShipyardContracts.BindingModels;
+using ShipyardContracts.BusinessLogicContracts;
+using ShipyardContracts.BusinessLogicsContracts;
+using ShipyardContracts.SearchModels;
+using ShipyardContracts.ViewModels;
+using ShipyardDataModels.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ShipyardBusinessLogic
+{
+	public class WorkModeling : IWorkProcess
+	{
+		private readonly ILogger _logger;
+		private readonly Random _rnd;
+		private IOrderLogic? _orderLogic;
+		public WorkModeling(ILogger<WorkModeling> logger)
+		{
+			_logger = logger;
+			_rnd = new Random(1000);
+		}
+		public void DoWork(IImplementerLogic implementerLogic, IOrderLogic orderLogic)
+		{
+			_orderLogic = orderLogic;
+			var implementers = implementerLogic.ReadList(null);
+			if (implementers == null)
+			{
+				_logger.LogWarning("DoWork. Implementers is null");
+				return;
+			}
+			var orders = _orderLogic.ReadList(new OrderSearchModel
+			{
+				Status = OrderStatus.Принят
+			});
+			if (orders == null || orders.Count == 0)
+			{
+				_logger.LogWarning("DoWork. Orders is null or empty");
+				return;
+			}
+			_logger.LogDebug("DoWork for {Count} orders", orders.Count);
+			foreach (var implementer in implementers)
+			{
+				Task.Run(() => WorkerWorkAsync(implementer, orders));
+			}
+		}
+		/// Иммитация работы исполнителя
+		private async Task WorkerWorkAsync(ImplementerViewModel implementer, List<OrderViewModel> orders)
+		{
+			if (_orderLogic == null || implementer == null)
+			{
+				return;
+			}
+			await RunOrderInWork(implementer);
+			await Task.Run(() =>
+			{
+				foreach (var order in orders)
+				{
+					try
+					{
+						_logger.LogDebug("DoWork. Worker {Id} try get order { Order}", implementer.Id, order.Id);
+						// пытаемся назначить заказ на исполнителя
+						_orderLogic.TakeOrderInWork(new OrderBindingModel
+						{
+							Id = order.Id,
+							ImplementerId = implementer.Id
+						});
+						// делаем работу
+						Thread.Sleep(implementer.WorkExperience * _rnd.Next(100, 1000) * order.Count);
+						_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));
+					}
+					// кто-то мог уже перехватить заказ, игнорируем ошибку
+					catch (InvalidOperationException ex)
+					{
+						_logger.LogWarning(ex, "Error try get work");
+					}
+					// заканчиваем выполнение имитации в случае иной ошибки
+					catch (Exception ex)
+					{
+						_logger.LogError(ex, "Error while do work");
+						throw;
+					}
+				}
+			});
+		}
+		/// Ищем заказ, которые уже в работе (вдруг исполнителя прервали)
+		private async Task RunOrderInWork(ImplementerViewModel implementer)
+		{
+			if (_orderLogic == null || implementer == null)
+			{
+				return;
+			}
+			try
+			{
+				var runOrder = await Task.Run(() => _orderLogic.ReadElement(new OrderSearchModel
+				{
+					ImplementerId = implementer.Id,
+					Status = OrderStatus.Выполняется
+				}));
+				if (runOrder == null)
+				{
+					return;
+				}
+				_logger.LogDebug("DoWork. Worker {Id} back to order {Order}", implementer.Id, runOrder.Id);
+				// доделываем работу
+				Thread.Sleep(implementer.WorkExperience * _rnd.Next(100, 300) * runOrder.Count);
+				_logger.LogDebug("DoWork. Worker {Id} finish order {Order}", implementer.Id, runOrder.Id);
+				_orderLogic.FinishOrder(new OrderBindingModel
+				{
+					Id = runOrder.Id
+				});
+				// отдыхаем
+				Thread.Sleep(implementer.Qualification * _rnd.Next(10, 100));
+			}
+			// заказа может не быть, просто игнорируем ошибку
+			catch (InvalidOperationException ex)
+			{
+				_logger.LogWarning(ex, "Error try get work");
+			}
+			// а может возникнуть иная ошибка, тогда просто заканчиваем выполнение имитации
+			catch (Exception ex)
+			{
+				_logger.LogError(ex, "Error while do work");
+				throw;
+			}
+		}
+	}
+}