diff --git a/TravelCompany/TravelCompanyBusinessLogic/BusinessLogic/Contractor/ContractorLogic.cs b/TravelCompany/TravelCompanyBusinessLogic/BusinessLogic/Contractor/ContractorLogic.cs
index 1e99bbf..eab9053 100644
--- a/TravelCompany/TravelCompanyBusinessLogic/BusinessLogic/Contractor/ContractorLogic.cs
+++ b/TravelCompany/TravelCompanyBusinessLogic/BusinessLogic/Contractor/ContractorLogic.cs
@@ -3,10 +3,135 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using TravelCompanyContracts.BusinessLogicsContracts.Contractor;
+using TravelCompanyContracts.BindingModels.Contractor;
+using TravelCompanyContracts.SearchModels.Contractor;
+using TravelCompanyContracts.StoragesModels.Contractor;
+using TravelCompanyContracts.ViewModels.Contractor.ViewModels;
 
 namespace TravelCompanyBusinessLogic.BusinessLogic.Contractor
 {
-    internal class ContractorLogic
+    public class ContractorLogic : IContractorLogic
     {
+        private readonly ILogger _logger;
+
+        private readonly IContractorStorage _contractorStorage;
+
+        public ContractorLogic(ILogger<ContractorLogic> logger, IContractorStorage contractorStorage)
+        {
+            _logger = logger;
+            _contractorStorage = contractorStorage;
+        }
+
+        public List<ContractorViewModel>? ReadList(ContractorSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. Surname: {Surname}. Name: {Name}. Patronymic: {Patronymic}. Id: {Id} ", model?.Surname, model?.Name, model?.Patronymic, model?.Id);
+            var list = (model == null) ? _contractorStorage.GetFullList() : _contractorStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
+            return list;
+        }
+
+        public ContractorViewModel? ReadElement(ContractorSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. User id: {Id}, User email: {Email}, User mobile phone: {MobilePhone}, User password: {Password}", model?.Id, model?.Email, model?.MobilePhone, model?.Password);
+            var element = _contractorStorage.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(ContractorBindingModel model)
+        {
+            CheckModel(model);
+            if (_contractorStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(ContractorBindingModel model)
+        {
+            CheckModel(model);
+            if (_contractorStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(ContractorBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id: {Id}", model.Id);
+            if (_contractorStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(ContractorBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.Surname))
+            {
+                throw new ArgumentNullException("Нет фамилии пользователя", nameof(model.Surname));
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentNullException("Нет имени пользователя", nameof(model.Name));
+            }
+            if (string.IsNullOrEmpty(model.Patronymic))
+            {
+                throw new ArgumentNullException("Нет отчества пользователя", nameof(model.Patronymic));
+            }
+            if (string.IsNullOrEmpty(model.Email))
+            {
+                throw new ArgumentNullException("Нет почты пользователя", nameof(model.Email));
+            }
+            if (string.IsNullOrEmpty(model.MobilePhone))
+            {
+                throw new ArgumentNullException("Нет номера телефона пользователя", nameof(model.MobilePhone));
+            }
+            if (string.IsNullOrEmpty(model.Password))
+            {
+                throw new ArgumentNullException("Нет пароля пользователя", nameof(model.Password));
+            }
+            _logger.LogInformation("User. Id: {id}, Surname: {Surname}, Name: {Name}, Patronymic: {Patronymic} Email: {Email}, Mobile Phone: {MobilePhone}, Password: {Password}", model.Id, model.Surname, model.Name, model.Patronymic, model.Email, model.MobilePhone, model.Password);
+            var element = _contractorStorage.GetElement(new ContractorSearchModel
+            {
+                Email = model.Email,
+                MobilePhone = model.MobilePhone,
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Пользователь с такими почтой или номером телефона уже есть");
+            }
+        }
     }
 }
diff --git a/TravelCompany/TravelCompanyBusinessLogic/BusinessLogic/Contractor/ExcursionGroupLogic.cs b/TravelCompany/TravelCompanyBusinessLogic/BusinessLogic/Contractor/ExcursionGroupLogic.cs
new file mode 100644
index 0000000..6b3a6c9
--- /dev/null
+++ b/TravelCompany/TravelCompanyBusinessLogic/BusinessLogic/Contractor/ExcursionGroupLogic.cs
@@ -0,0 +1,124 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using TravelCompanyContracts.BusinessLogicsContracts.Contractor;
+using TravelCompanyContracts.BindingModels.Contractor;
+using TravelCompanyContracts.SearchModels.Contractor;
+using TravelCompanyContracts.StoragesModels.Contractor;
+using TravelCompanyContracts.ViewModels.Contractor.ViewModels;
+
+namespace TravelCompanyBusinessLogic.BusinessLogic.Contractor
+{
+    public class ExcursionGroupLogic : IExcursionGroupLogic
+    {
+        private readonly ILogger _logger;
+
+        private readonly IExcursionGroupStorage _excursionGroupStorage;
+
+        public ExcursionGroupLogic(ILogger<ExcursionGroupLogic> logger, IExcursionGroupStorage excursionGroupStorage)
+        {
+            _logger = logger;
+            _excursionGroupStorage = excursionGroupStorage;
+        }
+
+        public List<ExcursionGroupViewModel>? ReadList(ExcursionGroupSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. Id: {Id}, ExcursionGroupName: {ExcursionGroupName}, ContractorID: {ContractorID}.", model?.Id, model?.ExcursionGroupName, model?.ContractorID);
+            var list = (model == null) ? _excursionGroupStorage.GetFullList() : _excursionGroupStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
+            return list;
+        }
+
+        public ExcursionGroupViewModel? ReadElement(ExcursionGroupSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. Id: {Id}, ExcursionGroup name: {ExcursionGroupName}", model?.Id, model?.ExcursionGroupName);
+            var element = _excursionGroupStorage.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(ExcursionGroupBindingModel model)
+        {
+            CheckModel(model);
+            if (_excursionGroupStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(ExcursionGroupBindingModel model)
+        {
+            CheckModel(model);
+            if (_excursionGroupStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(ExcursionGroupBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id: {Id}", model.Id);
+            if (_excursionGroupStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(ExcursionGroupBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.ExcursionGroupName))
+            {
+                throw new ArgumentNullException("Нет названия группы", nameof(model.ExcursionGroupName));
+            }
+            if (model.PeopleAmount <= 0)
+            {
+                throw new ArgumentNullException("Количество участников быть больше 0", nameof(model.PeopleAmount));
+            }
+            if (model.ContractorID <= 0)
+            {
+                throw new ArgumentNullException("Некорректный идентификатор исполнителя", nameof(model.ContractorID));
+            }
+            _logger.LogInformation("ExcursionGroup. Id: {id}, ExcursionGroupName: {ExcursionGroupName}, PeopleAmount: {PeopleAmount}, ContractorID: {ContractorID}", model.Id, model.ExcursionGroupName, model.PeopleAmount, model.ContractorID);
+            var element = _excursionGroupStorage.GetElement(new ExcursionGroupSearchModel
+            {
+                ExcursionGroupName = model.ExcursionGroupName
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Группа с таким названием уже есть");
+            }
+        }
+    }
+}
diff --git a/TravelCompany/TravelCompanyBusinessLogic/BusinessLogic/Contractor/ExcursionLogic.cs b/TravelCompany/TravelCompanyBusinessLogic/BusinessLogic/Contractor/ExcursionLogic.cs
new file mode 100644
index 0000000..747e645
--- /dev/null
+++ b/TravelCompany/TravelCompanyBusinessLogic/BusinessLogic/Contractor/ExcursionLogic.cs
@@ -0,0 +1,124 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using TravelCompanyContracts.BusinessLogicsContracts.Contractor;
+using TravelCompanyContracts.BindingModels.Contractor;
+using TravelCompanyContracts.SearchModels.Contractor;
+using TravelCompanyContracts.StoragesModels.Contractor;
+using TravelCompanyContracts.ViewModels.Contractor.ViewModels;
+
+namespace TravelCompanyBusinessLogic.BusinessLogic.Contractor
+{
+    public class ExcursionLogic : IExcursionLogic
+    {
+        private readonly ILogger _logger;
+
+        private readonly IExcursionStorage _excursionStorage;
+
+        public ExcursionLogic(ILogger<ExcursionLogic> logger, IExcursionStorage excursionStorage)
+        {
+            _logger = logger;
+            _excursionStorage = excursionStorage;
+        }
+
+        public List<ExcursionViewModel>? ReadList(ExcursionSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. Id: {Id}, ExcursionName: {ExcursionName}, ContractorID: {ContractorID}.", model?.Id, model?.ExcursionName, model?.ContractorID);
+            var list = (model == null) ? _excursionStorage.GetFullList() : _excursionStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
+            return list;
+        }
+
+        public ExcursionViewModel? ReadElement(ExcursionSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. Excursion id: {Id}, Excursion name: {ExcursionName}", model?.Id, model?.ExcursionName);
+            var element = _excursionStorage.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(ExcursionBindingModel model)
+        {
+            CheckModel(model);
+            if (_excursionStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(ExcursionBindingModel model)
+        {
+            CheckModel(model);
+            if (_excursionStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(ExcursionBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id: {Id}", model.Id);
+            if (_excursionStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(ExcursionBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.ExcursionName))
+            {
+                throw new ArgumentNullException("Нет названия экскурсии", nameof(model.ExcursionName));
+            }
+            if (model.ExcursionPrice <= 0)
+            {
+                throw new ArgumentNullException("Цена экскурсии должна быть больше 0", nameof(model.ExcursionPrice));
+            }
+            if (model.ContractorID <= 0)
+            {
+                throw new ArgumentNullException("Некорректный идентификатор исполнителя", nameof(model.ContractorID));
+            }
+            _logger.LogInformation("Excursion. Id: {id}, ExcursionName: {ExcursionName}, ExcursionPrice: {ExcursionPrice}, ContractorID: {ContractorID}", model.Id, model.ExcursionName, model.ExcursionPrice, model.ContractorID);
+            var element = _excursionStorage.GetElement(new ExcursionSearchModel
+            {
+                ExcursionName = model.ExcursionName
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Экскурсия с таким названием уже есть");
+            }
+        }
+    }
+}
diff --git a/TravelCompany/TravelCompanyBusinessLogic/BusinessLogic/Contractor/TourLogic.cs b/TravelCompany/TravelCompanyBusinessLogic/BusinessLogic/Contractor/TourLogic.cs
new file mode 100644
index 0000000..c4b0e85
--- /dev/null
+++ b/TravelCompany/TravelCompanyBusinessLogic/BusinessLogic/Contractor/TourLogic.cs
@@ -0,0 +1,124 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using TravelCompanyContracts.BusinessLogicsContracts.Contractor;
+using TravelCompanyContracts.BindingModels.Contractor;
+using TravelCompanyContracts.SearchModels.Contractor;
+using TravelCompanyContracts.StoragesModels.Contractor;
+using TravelCompanyContracts.ViewModels.Contractor.ViewModels;
+
+namespace TravelCompanyBusinessLogic.BusinessLogic.Contractor
+{
+    public class TourLogic : ITourLogic
+    {
+        private readonly ILogger _logger;
+
+        private readonly ITourStorage _tourStorage;
+
+        public TourLogic(ILogger<TourLogic> logger, ITourStorage tourStorage)
+        {
+            _logger = logger;
+            _tourStorage = tourStorage;
+        }
+
+        public List<TourViewModel>? ReadList(TourSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. Id: {Id}, TourName: {TourName}, ContractorID: {ContractorID}.", model?.Id, model?.TourName, model?.ContractorID);
+            var list = (model == null) ? _tourStorage.GetFullList() : _tourStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
+            return list;
+        }
+
+        public TourViewModel? ReadElement(TourSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. Id: {Id}, Tour name: {TourName}", model?.Id, model?.TourName);
+            var element = _tourStorage.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(TourBindingModel model)
+        {
+            CheckModel(model);
+            if (_tourStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(TourBindingModel model)
+        {
+            CheckModel(model);
+            if (_tourStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(TourBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id: {Id}", model.Id);
+            if (_tourStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(TourBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.TourName))
+            {
+                throw new ArgumentNullException("Нет названия тура", nameof(model.TourName));
+            }
+            if (model.TourDate == DateTime.MinValue)
+            {
+                throw new ArgumentNullException("Нет даты тура", nameof(model.TourDate));
+            }
+            if (model.ContractorID <= 0)
+            {
+                throw new ArgumentNullException("Некорректный идентификатор исполнителя", nameof(model.ContractorID));
+            }
+            _logger.LogInformation("Tour. Id: {id}, TourName: {TourName}, ContractorID: {ContractorID}", model.Id, model.TourName, model.ContractorID);
+            var element = _tourStorage.GetElement(new TourSearchModel
+            {
+                TourName = model.TourName
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Тур с таким названием уже есть");
+            }
+        }
+    }
+}
diff --git a/TravelCompany/TravelCompanyContracts/BusinessLogicsContracts/Contractor/IContractorLogic.cs b/TravelCompany/TravelCompanyContracts/BusinessLogicsContracts/Contractor/IContractorLogic.cs
index d4d869a..f1fa498 100644
--- a/TravelCompany/TravelCompanyContracts/BusinessLogicsContracts/Contractor/IContractorLogic.cs
+++ b/TravelCompany/TravelCompanyContracts/BusinessLogicsContracts/Contractor/IContractorLogic.cs
@@ -5,7 +5,7 @@ using System.Text;
 using System.Threading.Tasks;
 using TravelCompanyContracts.BindingModels.Contractor;
 using TravelCompanyContracts.SearchModels.Contractor;
-using TravelCompanyContracts.ViewModels.Contractor;
+using TravelCompanyContracts.ViewModels.Contractor.ViewModels;
 
 namespace TravelCompanyContracts.BusinessLogicsContracts.Contractor
 {
diff --git a/TravelCompany/TravelCompanyContracts/StoragesModels/Contractor/IContractorStorage.cs b/TravelCompany/TravelCompanyContracts/StoragesModels/Contractor/IContractorStorage.cs
index 80149db..766a8f2 100644
--- a/TravelCompany/TravelCompanyContracts/StoragesModels/Contractor/IContractorStorage.cs
+++ b/TravelCompany/TravelCompanyContracts/StoragesModels/Contractor/IContractorStorage.cs
@@ -3,7 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
-using TravelCompanyContracts.BindingModels;
+using TravelCompanyContracts.BindingModels.Contractor;
 using TravelCompanyContracts.SearchModels.Contractor;
 using TravelCompanyContracts.ViewModels.Contractor.ViewModels;
 
@@ -14,8 +14,8 @@ namespace TravelCompanyContracts.StoragesModels.Contractor
         List<ContractorViewModel> GetFullList();
         List<ContractorViewModel> GetFilteredList(ContractorSearchModel model);
         ContractorViewModel? GetElement(ContractorSearchModel model);
-        ContractorViewModel? Insert(ContractorSearchModel model);
-        ContractorViewModel? Update(ContractorSearchModel model);
-        ContractorViewModel? Delete(ContractorSearchModel model);
+        ContractorViewModel? Insert(ContractorBindingModel model);
+        ContractorViewModel? Update(ContractorBindingModel model);
+        ContractorViewModel? Delete(ContractorBindingModel model);
     }
 }