diff --git a/src/test/java/de/hmmh/pmt/IntegrationTest.java b/src/test/java/de/hmmh/pmt/IntegrationTest.java
index 91852a4..d1aa1e7 100644
--- a/src/test/java/de/hmmh/pmt/IntegrationTest.java
+++ b/src/test/java/de/hmmh/pmt/IntegrationTest.java
@@ -164,6 +164,12 @@ public abstract class IntegrationTest {
         allocation1ToOverlapA.setEmployeeId(TEST_EMPLOYEE_A_ID);
         allocation1ToOverlapA.setRole(TEST_QUALIFICATION_A_ID);
         allocations.put("1>overlap-a", allocation1ToOverlapA);
+
+        Allocation allocation1ToAiResearch = new Allocation();
+        allocation1ToAiResearch.setProject(allProjects.get("ai-research"));
+        allocation1ToAiResearch.setEmployeeId(TEST_EMPLOYEE_A_ID);
+        allocation1ToAiResearch.setRole(TEST_QUALIFICATION_A_ID);
+        allocations.put("1>ai-research", allocation1ToAiResearch);
         
         allocationRepository.saveAllAndFlush(allocations.values());
         return allocations;
diff --git a/src/test/java/de/hmmh/pmt/project/GetAllEmployeesByProjectTest.java b/src/test/java/de/hmmh/pmt/project/GetAllEmployeesByProjectTest.java
new file mode 100644
index 0000000..7083385
--- /dev/null
+++ b/src/test/java/de/hmmh/pmt/project/GetAllEmployeesByProjectTest.java
@@ -0,0 +1,67 @@
+package de.hmmh.pmt.project;
+
+import de.hmmh.pmt.IntegrationTest;
+import de.hmmh.pmt.db.Allocation;
+import de.hmmh.pmt.db.Project;
+import org.junit.jupiter.api.Test;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.servlet.RequestBuilder;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.web.client.RestClientException;
+
+
+import java.util.Map;
+
+
+import static org.mockito.Mockito.when;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+public class GetAllEmployeesByProjectTest extends IntegrationTest {
+
+    @Test
+    void shouldReturnNotFoundWhenProjectDoesNotExist() throws Exception {
+        createTestProjectData();
+
+        this.mvc
+                .perform(getRequest(50L))
+                .andExpect(status().isNotFound());
+    }
+
+    @Test
+    void shouldReturnOkWhenProjectHasNoEmployees() throws Exception {
+        Map<String, Project> allProjects = createTestProjectData();
+
+        this.mvc
+                .perform(getRequest(allProjects.get("research-lab").getId()))
+                .andExpect(status().isOk());
+    }
+
+    @Test
+    void shouldReturnListOfEmployeesWhenAllParametersAreValid() throws Exception {
+        Map<String, Project> allProjects = createTestProjectData();
+        Map<String, Allocation> allocations = createTestAllocationData(allProjects);
+
+        this.mvc
+                .perform(getRequest(allProjects.get("ai-research").getId()))
+                .andExpect(status().isOk());
+    }
+
+    @Test
+    void shouldReturnInternalServer() throws Exception {
+        when(this.mockEmployeeApi.findAll1())
+                .thenThrow(new RestClientException("Internal Server Error"));
+
+        Map<String, Project> allProjects = createTestProjectData();
+        Map<String, Allocation> allocations = createTestAllocationData(allProjects);
+
+        this.mvc
+                .perform(getRequest(allProjects.get("ai-research").getId()))
+                .andExpect(status().isInternalServerError());
+    }
+
+    private RequestBuilder getRequest(Long projectId) {
+        return MockMvcRequestBuilders
+                .get(baseUri + "/project/" + projectId + "/employees")
+                .contentType(MediaType.APPLICATION_JSON);
+    }
+}