diff --git a/ConstructionCompany/ConstructionCompany.sln b/ConstructionCompany/ConstructionCompany.sln
index 79d8a4e..33e343d 100644
--- a/ConstructionCompany/ConstructionCompany.sln
+++ b/ConstructionCompany/ConstructionCompany.sln
@@ -9,6 +9,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ConstructionCompanyDataMode
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConstructionCompanyContracts", "ConstructionCompanyContracts\ConstructionCompanyContracts.csproj", "{CFB66158-7025-4605-9739-C4A2F07D2EB6}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConstructionCompanyBusinessLogic", "ConstructionCompanyBusiness\ConstructionCompanyBusinessLogic.csproj", "{FB447245-07E1-4E0D-A4FC-701E295B7575}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -27,6 +29,10 @@ Global
 		{CFB66158-7025-4605-9739-C4A2F07D2EB6}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{CFB66158-7025-4605-9739-C4A2F07D2EB6}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{CFB66158-7025-4605-9739-C4A2F07D2EB6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{FB447245-07E1-4E0D-A4FC-701E295B7575}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{FB447245-07E1-4E0D-A4FC-701E295B7575}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FB447245-07E1-4E0D-A4FC-701E295B7575}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FB447245-07E1-4E0D-A4FC-701E295B7575}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/ConstructionCompany/ConstructionCompanyBusinessLogic/BusinessLogics/EmployeeLogic.cs b/ConstructionCompany/ConstructionCompanyBusinessLogic/BusinessLogics/EmployeeLogic.cs
new file mode 100644
index 0000000..77e64ab
--- /dev/null
+++ b/ConstructionCompany/ConstructionCompanyBusinessLogic/BusinessLogics/EmployeeLogic.cs
@@ -0,0 +1,114 @@
+using ConstructionCompanyContracts.BindingModels;
+using ConstructionCompanyContracts.BusinessLogicContracts;
+using ConstructionCompanyContracts.SearchModels;
+using ConstructionCompanyContracts.StorageContracts;
+using ConstructionCompanyContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConstructionCompanyBusinessLogic.BusinessLogics
+{
+    public class EmployeeLogic :IEmployeeLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IEmployeeStorage _employeeStorage;
+
+        public EmployeeLogic(ILogger<EmployeeLogic> logger, IEmployeeStorage employeeStorage)
+        {
+            _logger = logger;
+            _employeeStorage = employeeStorage;
+        }
+
+        public List<EmployeeViewModel>? ReadList(EmployeeSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. EmployeeName:{EmployeeName}. Id:{Id}", model?.EmployeeName, model?.Id);
+            var list = model == null ? _employeeStorage.GetFullList() : _employeeStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+
+        public EmployeeViewModel? ReadElement(EmployeeSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. EmployeeName:{EmployeeName}. Id:{Id}", model.EmployeeName, model.Id);
+            var element = _employeeStorage.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(EmployeeBindingModel model)
+        {
+            CheckModel(model);
+            if (_employeeStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(EmployeeBindingModel model)
+        {
+            CheckModel(model);
+            if (_employeeStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+        public bool Delete(EmployeeBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+            if (_employeeStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(EmployeeBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.EmployeeName))
+            {
+                throw new ArgumentNullException("Нет названия материала", nameof(model.EmployeeName));
+            }
+            _logger.LogInformation("Employee. EmployeeName:{EmployeeName}. Id:{Id}", model.EmployeeName, model.Id);
+            var element = _employeeStorage.GetElement(new EmployeeSearchModel
+            {
+                EmployeeName = model.EmployeeName
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Сотрудник с таким названием уже есть");
+            }
+        }
+    }
+}
diff --git a/ConstructionCompany/ConstructionCompanyBusinessLogic/BusinessLogics/MaterialLogic.cs b/ConstructionCompany/ConstructionCompanyBusinessLogic/BusinessLogics/MaterialLogic.cs
new file mode 100644
index 0000000..e122620
--- /dev/null
+++ b/ConstructionCompany/ConstructionCompanyBusinessLogic/BusinessLogics/MaterialLogic.cs
@@ -0,0 +1,118 @@
+using ConstructionCompanyContracts.BusinessLogicContracts;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using ConstructionCompanyContracts.StorageContracts;
+using ConstructionCompanyContracts.ViewModels;
+using ConstructionCompanyContracts.SearchModels;
+using ConstructionCompanyContracts.BindingModels;
+
+namespace ConstructionCompanyBusinessLogic.BusinessLogics
+{
+    public class MaterialLogic : IMaterialLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IMaterialStorage _materialStorage;
+
+        public MaterialLogic(ILogger<MaterialLogic> logger, IMaterialStorage materialStorage)
+        {
+            _logger = logger;
+            _materialStorage = materialStorage;
+        }
+
+        public List<MaterialViewModel>? ReadList(MaterialSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. MaterialName:{MaterialName}. Id:{Id}", model?.MaterialName, model?.Id);
+            var list = model == null ? _materialStorage.GetFullList() : _materialStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+
+        public MaterialViewModel? ReadElement(MaterialSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. MaterialName:{MaterialName}. Id:{Id}", model.MaterialName, model.Id);
+            var element = _materialStorage.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(MaterialBindingModel model)
+        {
+            CheckModel(model);
+            if (_materialStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(MaterialBindingModel model)
+        {
+            CheckModel(model);
+            if (_materialStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+        public bool Delete(MaterialBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+            if (_materialStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(MaterialBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.MaterialName))
+            {
+                throw new ArgumentNullException("Нет названия материала", nameof(model.MaterialName));
+            }
+            if (model.Quantity < 0)
+            {
+                throw new ArgumentNullException("Колчество материалов должна быть не меньше 0", nameof(model.Quantity));
+            }
+            _logger.LogInformation("Material. IngredietnName:{MaterialName}. Quantity:{Quantity}. Id:{Id}", model.MaterialName, model.Quantity, model.Id);
+            var element = _materialStorage.GetElement(new MaterialSearchModel
+            {
+                MaterialName = model.MaterialName
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Материал с таким названием уже есть");
+            }
+        }
+    }
+}
diff --git a/ConstructionCompany/ConstructionCompanyBusinessLogic/BusinessLogics/OrderLogic.cs b/ConstructionCompany/ConstructionCompanyBusinessLogic/BusinessLogics/OrderLogic.cs
new file mode 100644
index 0000000..a8547f6
--- /dev/null
+++ b/ConstructionCompany/ConstructionCompanyBusinessLogic/BusinessLogics/OrderLogic.cs
@@ -0,0 +1,135 @@
+using ConstructionCompanyContracts.BindingModels;
+using ConstructionCompanyContracts.BusinessLogicContracts;
+using ConstructionCompanyContracts.SearchModels;
+using ConstructionCompanyContracts.StorageContracts;
+using ConstructionCompanyContracts.ViewModels;
+using ConstructionCompanyDataModels.Enums;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConstructionCompanyBusinessLogic.BusinessLogics
+{
+    public class OrderLogic : IOrderLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IOrderStorage _orderStorage;
+
+        public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage)
+        {
+            _logger = logger;
+            _orderStorage = orderStorage;
+        }
+
+        public List<OrderViewModel>? ReadList(OrderSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. Id:{Id}", model?.Id);
+            var list = model == null ? _orderStorage.GetFullList() : _orderStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+
+        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 bool CreateOrder(OrderBindingModel model)
+        {
+            CheckModel(model);
+            if (model.Status != OrderStatus.Неизвестен) return false;
+            model.Status = OrderStatus.Принят;
+            if (_orderStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool FinishOrder(OrderBindingModel model)
+        {
+            CheckModel(model, false);
+            var element = _orderStorage.GetElement(new OrderSearchModel
+            {
+                Id = model.Id
+            });
+            if (element == null)
+            {
+                _logger.LogWarning("Read operation failed");
+                return false;
+            }
+            if (element.Status != OrderStatus.Выполняется)
+            {
+                _logger.LogWarning("Status change operation failed");
+                throw new InvalidOperationException("Заказ должен быть переведен в статус выполнения перед готовностью!");
+            }
+            model.Status = OrderStatus.Завершён;
+            _orderStorage.Update(model);
+            return true;
+        }
+
+        public bool TakeOrderInWork(OrderBindingModel model)
+        {
+            CheckModel(model, false);
+            var element = _orderStorage.GetElement(new OrderSearchModel
+            {
+                Id = model.Id
+            });
+            if (element == null)
+            {
+                _logger.LogWarning("Read operation failed");
+                return false;
+            }
+            if (element.Status != OrderStatus.Принят)
+            {
+                _logger.LogWarning("Status change operation failed");
+                throw new InvalidOperationException("Заказ должен быть переведен в статус принятого перед его выполнением!");
+            }
+            model.Status = OrderStatus.Выполняется;
+            _orderStorage.Update(model);
+            return true;
+        }
+
+        private void CheckModel(OrderBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            _logger.LogInformation("Order. Id:{Id}", model.Id);
+            var element = _orderStorage.GetElement(new OrderSearchModel
+            {
+                Id = model.Id
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Заказ с таким названием уже есть");
+            }
+        }
+    }
+}
diff --git a/ConstructionCompany/ConstructionCompanyBusinessLogic/BusinessLogics/PositionLogic.cs b/ConstructionCompany/ConstructionCompanyBusinessLogic/BusinessLogics/PositionLogic.cs
new file mode 100644
index 0000000..9dcb008
--- /dev/null
+++ b/ConstructionCompany/ConstructionCompanyBusinessLogic/BusinessLogics/PositionLogic.cs
@@ -0,0 +1,117 @@
+using ConstructionCompanyContracts.BindingModels;
+using ConstructionCompanyContracts.SearchModels;
+using ConstructionCompanyContracts.StorageContracts;
+using ConstructionCompanyContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConstructionCompanyBusinessLogic.BusinessLogics
+{
+    public class PositionLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IPositionStorage _positionStorage;
+
+        public PositionLogic(ILogger<PositionLogic> logger, IPositionStorage positionStorage)
+        {
+            _logger = logger;
+            _positionStorage = positionStorage;
+        }
+
+        public List<PositionViewModel>? ReadList(PositionSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. PositionName:{PositionName}. Id:{Id}", model?.PositionName, model?.Id);
+            var list = model == null ? _positionStorage.GetFullList() : _positionStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+
+        public PositionViewModel? ReadElement(PositionSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. PositionName:{PositionName}. Id:{Id}", model.PositionName, model.Id);
+            var element = _positionStorage.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(PositionBindingModel model)
+        {
+            CheckModel(model);
+            if (_positionStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(PositionBindingModel model)
+        {
+            CheckModel(model);
+            if (_positionStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+        public bool Delete(PositionBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+            if (_positionStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(PositionBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.PositionName))
+            {
+                throw new ArgumentNullException("Нет названия материала", nameof(model.PositionName));
+            }
+            if (model.Salary < 0)
+            {
+                throw new ArgumentNullException("Зарплата должна быть не меньше 0", nameof(model.Salary));
+            }
+            _logger.LogInformation("Position. PositionName:{PositionName}. Salary:{Salary}. Id:{Id}", model.PositionName, model.Salary, model.Id);
+            var element = _positionStorage.GetElement(new PositionSearchModel
+            {
+                PositionName = model.PositionName
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Должность с таким названием уже есть");
+            }
+        }
+    }
+}
diff --git a/ConstructionCompany/ConstructionCompanyBusinessLogic/Class1.cs b/ConstructionCompany/ConstructionCompanyBusinessLogic/Class1.cs
new file mode 100644
index 0000000..be8d116
--- /dev/null
+++ b/ConstructionCompany/ConstructionCompanyBusinessLogic/Class1.cs
@@ -0,0 +1,7 @@
+namespace ConstructionCompanyBusiness
+{
+    public class Class1
+    {
+
+    }
+}
\ No newline at end of file
diff --git a/ConstructionCompany/ConstructionCompanyBusinessLogic/ConstructionCompanyBusinessLogic.csproj b/ConstructionCompany/ConstructionCompanyBusinessLogic/ConstructionCompanyBusinessLogic.csproj
new file mode 100644
index 0000000..3b52dab
--- /dev/null
+++ b/ConstructionCompany/ConstructionCompanyBusinessLogic/ConstructionCompanyBusinessLogic.csproj
@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ConstructionCompanyContracts\ConstructionCompanyContracts.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/ConstructionCompany/ConstructionCompanyContracts/BindingModels/OrderBindingModel.cs b/ConstructionCompany/ConstructionCompanyContracts/BindingModels/OrderBindingModel.cs
index b8a3e6c..df4e0d4 100644
--- a/ConstructionCompany/ConstructionCompanyContracts/BindingModels/OrderBindingModel.cs
+++ b/ConstructionCompany/ConstructionCompanyContracts/BindingModels/OrderBindingModel.cs
@@ -14,9 +14,9 @@ namespace ConstructionCompanyContracts.BindingModels
 
         public string Adress { get; set; } = string.Empty;
 
-        public double Price => throw new NotImplementedException();
+        public double Price { get; set; }
 
-        public OrderStatus Status => throw new NotImplementedException();
+        public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
 
         public string CustomerNumber { get; set; } = string.Empty;
 
diff --git a/ConstructionCompany/ConstructionCompanyContracts/BusinessLogicContracts/IEmployeeModel.cs b/ConstructionCompany/ConstructionCompanyContracts/BusinessLogicContracts/IEmployeeLogic.cs
similarity index 94%
rename from ConstructionCompany/ConstructionCompanyContracts/BusinessLogicContracts/IEmployeeModel.cs
rename to ConstructionCompany/ConstructionCompanyContracts/BusinessLogicContracts/IEmployeeLogic.cs
index 2dfa3af..1041afe 100644
--- a/ConstructionCompany/ConstructionCompanyContracts/BusinessLogicContracts/IEmployeeModel.cs
+++ b/ConstructionCompany/ConstructionCompanyContracts/BusinessLogicContracts/IEmployeeLogic.cs
@@ -9,7 +9,7 @@ using System.Threading.Tasks;
 
 namespace ConstructionCompanyContracts.BusinessLogicContracts
 {
-    public interface IEmployeeModel
+    public interface IEmployeeLogic
     {
         List<EmployeeViewModel>? ReadList(EmployeeSearchModel? model);
         EmployeeViewModel? ReadElement(EmployeeSearchModel model);