diff --git a/backend/.idea/workspace.xml b/backend/.idea/workspace.xml
index 614d225..62660ce 100644
--- a/backend/.idea/workspace.xml
+++ b/backend/.idea/workspace.xml
@@ -5,10 +5,9 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="3a869f59-290a-4ab2-b036-a878ce801bc4" name="Changes" comment="Remove update spamming in console">
-      <change afterPath="$PROJECT_DIR$/src/main/java/core/api/models/timemanager/taskgroup/RecursiveTaskgroupInfo.java" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/src/main/java/core/api/models/timemanager/tasks/TaskOverviewInfo.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/core/api/controller/TaskgroupController.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/core/api/controller/TaskgroupController.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/core/api/models/timemanager/taskgroup/RecursiveTaskgroupInfo.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/core/api/models/timemanager/taskgroup/RecursiveTaskgroupInfo.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/core/entities/timemanager/Taskgroup.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/core/entities/timemanager/Taskgroup.java" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -104,7 +103,7 @@
       <workItem from="1698246651541" duration="5106000" />
       <workItem from="1698298897364" duration="4242000" />
       <workItem from="1698426430946" duration="665000" />
-      <workItem from="1698474363766" duration="1934000" />
+      <workItem from="1698474363766" duration="3686000" />
     </task>
     <task id="LOCAL-00001" summary="Structure Taskgroups in Hierarchies">
       <option name="closed" value="true" />
diff --git a/backend/src/main/java/core/api/models/timemanager/taskgroup/RecursiveTaskgroupInfo.java b/backend/src/main/java/core/api/models/timemanager/taskgroup/RecursiveTaskgroupInfo.java
index ca19aa6..2cfd127 100644
--- a/backend/src/main/java/core/api/models/timemanager/taskgroup/RecursiveTaskgroupInfo.java
+++ b/backend/src/main/java/core/api/models/timemanager/taskgroup/RecursiveTaskgroupInfo.java
@@ -4,7 +4,9 @@ import core.api.models.timemanager.tasks.TaskOverviewInfo;
 import core.entities.timemanager.Task;
 import core.entities.timemanager.Taskgroup;
 
+import java.time.LocalDate;
 import java.util.ArrayList;
+import java.util.LinkedList;
 import java.util.List;
 
 public class RecursiveTaskgroupInfo {
@@ -12,9 +14,13 @@ public class RecursiveTaskgroupInfo {
     private long taskgroupID;
     private String taskgroupName;
 
+    private boolean hasOverdueTask;
+
+    private int amountActiveTasks;
+
     private List<RecursiveTaskgroupInfo> childTaskgroups = new ArrayList<>();
 
-    private List<TaskOverviewInfo> activeTasks = new ArrayList<>();
+    private List<TaskOverviewInfo> activeTasks = new LinkedList<>();
 
     public RecursiveTaskgroupInfo(Taskgroup taskgroup) {
         this.taskgroupID = taskgroup.getTaskgroupID();
@@ -24,9 +30,13 @@ public class RecursiveTaskgroupInfo {
             this.childTaskgroups.add(new RecursiveTaskgroupInfo(child));
         }
 
-        for(Task task : taskgroup.getTasks()) {
+        for(Task task : taskgroup.getActiveTasks()) {
             this.activeTasks.add(new TaskOverviewInfo(task));
+            if(task.getDeadline().isBefore(LocalDate.now())) {
+                this.hasOverdueTask = true;
+            }
         }
+        this.amountActiveTasks = taskgroup.getAmountOfActiveTasks();
     }
 
     public long getTaskgroupID() {
@@ -60,4 +70,20 @@ public class RecursiveTaskgroupInfo {
     public void setActiveTasks(List<TaskOverviewInfo> activeTasks) {
         this.activeTasks = activeTasks;
     }
+
+    public boolean isHasOverdueTask() {
+        return hasOverdueTask;
+    }
+
+    public void setHasOverdueTask(boolean hasOverdueTask) {
+        this.hasOverdueTask = hasOverdueTask;
+    }
+
+    public int getAmountActiveTasks() {
+        return amountActiveTasks;
+    }
+
+    public void setAmountActiveTasks(int amountActiveTasks) {
+        this.amountActiveTasks = amountActiveTasks;
+    }
 }
diff --git a/backend/src/main/java/core/entities/timemanager/Taskgroup.java b/backend/src/main/java/core/entities/timemanager/Taskgroup.java
index cda02db..864c9b0 100644
--- a/backend/src/main/java/core/entities/timemanager/Taskgroup.java
+++ b/backend/src/main/java/core/entities/timemanager/Taskgroup.java
@@ -97,4 +97,22 @@ public class Taskgroup {
         }
         return ancestors;
     }
+
+    public List<Task> getActiveTasks() {
+        List<Task> tasks = new LinkedList<>();
+        for(Task task : this.tasks) {
+            if(!task.isFinished()) {
+                tasks.add(task);
+            }
+        }
+        return tasks;
+    }
+
+    public int getAmountOfActiveTasks() {
+        int activeAmountTasks = getActiveTasks().size();
+        for(Taskgroup taskgroup : children) {
+            activeAmountTasks += taskgroup.getAmountOfActiveTasks();
+        }
+        return activeAmountTasks;
+    }
 }
diff --git a/frontend/src/api/model/recursiveTaskgroupInfo.ts b/frontend/src/api/model/recursiveTaskgroupInfo.ts
index 57aa8cb..0ca5616 100644
--- a/frontend/src/api/model/recursiveTaskgroupInfo.ts
+++ b/frontend/src/api/model/recursiveTaskgroupInfo.ts
@@ -23,5 +23,13 @@ export interface RecursiveTaskgroupInfo {
     taskgroupName: string;
     childTaskgroups: Array<RecursiveTaskgroupInfo>;
     activeTasks: Array<TaskOverviewInfo>;
+    /**
+     * determines whether the taskgroup has an overdue task or not
+     */
+    hasOverdueTask: boolean;
+    /**
+     * determines the number of active tasks that can be scheduled
+     */
+    amountActiveTasks: number;
 }
 
diff --git a/frontend/src/app/dashboard/taskgroup-overview/taskgroup-overview.component.css b/frontend/src/app/dashboard/taskgroup-overview/taskgroup-overview.component.css
index e3dd867..53bc088 100644
--- a/frontend/src/app/dashboard/taskgroup-overview/taskgroup-overview.component.css
+++ b/frontend/src/app/dashboard/taskgroup-overview/taskgroup-overview.component.css
@@ -161,3 +161,7 @@
   align-items: center;
   width: 100%;
 }
+
+.overdue-taskgroup {
+  background-color: #ff6354;
+}
diff --git a/frontend/src/app/dashboard/taskgroup-overview/taskgroup-overview.component.html b/frontend/src/app/dashboard/taskgroup-overview/taskgroup-overview.component.html
index d2a16ab..493b18b 100644
--- a/frontend/src/app/dashboard/taskgroup-overview/taskgroup-overview.component.html
+++ b/frontend/src/app/dashboard/taskgroup-overview/taskgroup-overview.component.html
@@ -3,7 +3,7 @@
 </mat-action-list>
 <mat-tree [dataSource]="dataSource" [treeControl]="treeControl" >
   <!-- This is the tree node template for leaf nodes -->
-  <mat-tree-node *matTreeNodeDef="let node" matTreeNodePadding class="taskgroup-btn" matTreeNodePaddingIndent="10">
+  <mat-tree-node *matTreeNodeDef="let node" matTreeNodePadding class="taskgroup-btn" matTreeNodePaddingIndent="10" [ngClass]="node.hasOverdueTask? 'overdue-taskgroup':''">
     <!-- use a disabled button to provide padding for tree leaf -->
     <button mat-icon-button disabled></button>
     <div class="treenode-content-container">
@@ -13,7 +13,7 @@
     </div>
   </mat-tree-node>
   <!-- This is the tree node template for expandable nodes -->
-  <mat-tree-node *matTreeNodeDef="let node;when: hasChild" matTreeNodePadding class="taskgroup-btn" matTreeNodePaddingIndent="10">
+  <mat-tree-node *matTreeNodeDef="let node;when: hasChild" matTreeNodePadding class="taskgroup-btn" matTreeNodePaddingIndent="10" [ngClass]="node.hasOverdueTask? 'overdue-taskgroup':''">
     <button mat-icon-button matTreeNodeToggle
             [attr.aria-label]="'Toggle ' + node.name" style="padding-left: 10px">
       <mat-icon class="mat-icon-rtl-mirror">
@@ -24,6 +24,7 @@
       <button mat-button class="node-name">{{node.name}}</button>
       <span class="spacer"></span>
       <div class="task-number">{{node.activeTasks}}</div>
+
     </div>
   </mat-tree-node>
 </mat-tree>
diff --git a/frontend/src/app/dashboard/taskgroup-overview/taskgroup-overview.component.ts b/frontend/src/app/dashboard/taskgroup-overview/taskgroup-overview.component.ts
index 6f501e0..5b4dd9f 100644
--- a/frontend/src/app/dashboard/taskgroup-overview/taskgroup-overview.component.ts
+++ b/frontend/src/app/dashboard/taskgroup-overview/taskgroup-overview.component.ts
@@ -14,6 +14,7 @@ interface ExampleFlatNode {
   name: string;
   level: number;
   activeTasks: number;
+  hasOverdueTask: boolean
 }
 @Component({
   selector: 'app-taskgroup-overview',
@@ -26,7 +27,8 @@ export class TaskgroupOverviewComponent {
       expandable: !!node.childTaskgroups && node.childTaskgroups.length > 0,
       name: node.taskgroupName,
       level: level,
-      activeTasks: node.activeTasks.length
+      activeTasks: node.amountActiveTasks,
+      hasOverdueTask: node.hasOverdueTask
     };
   };
 
diff --git a/openapi.yaml b/openapi.yaml
index bdf9a9b..53f3969 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -2002,6 +2002,8 @@ components:
         - taskgroupName
         - childTaskgroups
         - activeTasks
+        - hasOverdueTask
+        - amountActiveTasks
       additionalProperties: false
       properties:
         taskgroupID:
@@ -2022,6 +2024,14 @@ components:
           type: array
           items:
             $ref: '#/components/schemas/TaskOverviewInfo'
+        hasOverdueTask:
+          type: boolean
+          example: true
+          description: determines whether the taskgroup has an overdue task or not
+        amountActiveTasks:
+          type: number
+          example: 2
+          description: determines the number of active tasks that can be scheduled
     TaskOverviewInfo:
       required:
         - taskID