diff --git a/STOContracts/BusinessLogicContracts/IWorkLogic.cs b/STOContracts/BusinessLogicContracts/IWorkLogic.cs
new file mode 100644
index 0000000..69f1e4b
--- /dev/null
+++ b/STOContracts/BusinessLogicContracts/IWorkLogic.cs
@@ -0,0 +1,15 @@
+using STOContracts.BindingModels;
+using STOContracts.SearchModels;
+using STOContracts.ViewModels;
+
+namespace STOContracts.BusinessLogicContracts
+{
+    public interface IWorkLogic
+    {
+        List<WorkViewModel>? ReadList(WorkSearchModel? model);
+        WorkViewModel? ReadElement(WorkSearchModel model);
+        bool Create(WorkBindingModel model);
+        bool Update(WorkBindingModel model);
+        bool Delete(WorkBindingModel model);
+    }
+}