diff --git a/backend/src/main/java/de/hft/geotime/entities/TimeRecord.java b/backend/src/main/java/de/hft/geotime/entities/TimeRecord.java
index ef08904..4af9a04 100644
--- a/backend/src/main/java/de/hft/geotime/entities/TimeRecord.java
+++ b/backend/src/main/java/de/hft/geotime/entities/TimeRecord.java
@@ -3,6 +3,8 @@ package de.hft.geotime.entities;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
+import org.hibernate.annotations.OnDelete;
+import org.hibernate.annotations.OnDeleteAction;
 
 import javax.persistence.*;
 import java.time.LocalDateTime;
@@ -19,6 +21,7 @@ public class TimeRecord {
     private long id;
 
     @ManyToOne
+    @OnDelete(action = OnDeleteAction.CASCADE)
     private TimetrackAccount account;
 
     @Column(columnDefinition = "TIMESTAMP")
diff --git a/backend/src/main/java/de/hft/geotime/entities/TimetrackAccount.java b/backend/src/main/java/de/hft/geotime/entities/TimetrackAccount.java
index bdec014..af3b5ba 100644
--- a/backend/src/main/java/de/hft/geotime/entities/TimetrackAccount.java
+++ b/backend/src/main/java/de/hft/geotime/entities/TimetrackAccount.java
@@ -4,6 +4,8 @@ import com.fasterxml.jackson.annotation.JsonBackReference;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
+import org.hibernate.annotations.OnDelete;
+import org.hibernate.annotations.OnDeleteAction;
 
 import javax.persistence.*;
 
@@ -21,6 +23,7 @@ public class TimetrackAccount {
     private String description;
 
     @ManyToOne
+    @OnDelete(action = OnDeleteAction.CASCADE)
     private TimetrackUser user;
 
 }