diff --git a/hr-domain/src/com/example/hr/events/BusinessEvent.java b/hr-domain/src/com/example/hr/events/BusinessEvent.java
index 3f32e52..ef11139 100644
--- a/hr-domain/src/com/example/hr/events/BusinessEvent.java
+++ b/hr-domain/src/com/example/hr/events/BusinessEvent.java
@@ -6,9 +6,12 @@
  *
  */
 public class BusinessEvent {
-	private final String eventId;
-	private final String topic;
-	private final Object data;
+	private String eventId;
+	private String topic;
+	private Object data;
+
+	public BusinessEvent() {
+	}
 
 	public BusinessEvent(String eventId, String topic, Object data) {
 		this.eventId = eventId;
@@ -20,14 +23,26 @@ public String getEventId() {
 		return eventId;
 	}
 
+	public void setEventId(String eventId) {
+		this.eventId = eventId;
+	}
+
 	public String getTopic() {
 		return topic;
 	}
 
+	public void setTopic(String topic) {
+		this.topic = topic;
+	}
+
 	public Object getData() {
 		return data;
 	}
 
+	public void setData(Object data) {
+		this.data = data;
+	}
+
 	@Override
 	public String toString() {
 		return "BusinessEvent [eventId=" + eventId + ", topic=" + topic + ", data=" + data + "]";
diff --git a/hr-domain/src/com/example/hr/events/EmployeeFiredEvent.java b/hr-domain/src/com/example/hr/events/EmployeeFiredEvent.java
index d7465bf..0bbb0ba 100644
--- a/hr-domain/src/com/example/hr/events/EmployeeFiredEvent.java
+++ b/hr-domain/src/com/example/hr/events/EmployeeFiredEvent.java
@@ -7,6 +7,9 @@
  */
 public class EmployeeFiredEvent extends BusinessEvent {
 
+	public EmployeeFiredEvent() {
+	}
+
 	public EmployeeFiredEvent(String eventId, String topic, Object data) {
 		super(eventId, topic, data);
 	}
diff --git a/hr-domain/src/com/example/hr/events/EmployeeHiredEvent.java b/hr-domain/src/com/example/hr/events/EmployeeHiredEvent.java
index 627acab..d30cdef 100644
--- a/hr-domain/src/com/example/hr/events/EmployeeHiredEvent.java
+++ b/hr-domain/src/com/example/hr/events/EmployeeHiredEvent.java
@@ -7,6 +7,9 @@
  */
 public class EmployeeHiredEvent extends BusinessEvent {
 
+	public EmployeeHiredEvent() {
+	}
+
 	public EmployeeHiredEvent(String eventId, String topic, Object data) {
 		super(eventId, topic, data);
 	}
diff --git a/identity-card-microservice/src/main/java/com/example/hr/events/BusinessEvent.java b/identity-card-microservice/src/main/java/com/example/hr/events/BusinessEvent.java
index 4babe7a..ef11139 100644
--- a/identity-card-microservice/src/main/java/com/example/hr/events/BusinessEvent.java
+++ b/identity-card-microservice/src/main/java/com/example/hr/events/BusinessEvent.java
@@ -9,7 +9,7 @@ public class BusinessEvent {
 	private String eventId;
 	private String topic;
 	private Object data;
-	
+
 	public BusinessEvent() {
 	}
 
@@ -23,22 +23,22 @@ public String getEventId() {
 		return eventId;
 	}
 
-	public String getTopic() {
-		return topic;
-	}
-
-	public Object getData() {
-		return data;
-	}
-
 	public void setEventId(String eventId) {
 		this.eventId = eventId;
 	}
 
+	public String getTopic() {
+		return topic;
+	}
+
 	public void setTopic(String topic) {
 		this.topic = topic;
 	}
 
+	public Object getData() {
+		return data;
+	}
+
 	public void setData(Object data) {
 		this.data = data;
 	}
diff --git a/identity-card-microservice/src/main/java/com/example/hr/events/EmployeeFiredEvent.java b/identity-card-microservice/src/main/java/com/example/hr/events/EmployeeFiredEvent.java
index d7465bf..0bbb0ba 100644
--- a/identity-card-microservice/src/main/java/com/example/hr/events/EmployeeFiredEvent.java
+++ b/identity-card-microservice/src/main/java/com/example/hr/events/EmployeeFiredEvent.java
@@ -7,6 +7,9 @@
  */
 public class EmployeeFiredEvent extends BusinessEvent {
 
+	public EmployeeFiredEvent() {
+	}
+
 	public EmployeeFiredEvent(String eventId, String topic, Object data) {
 		super(eventId, topic, data);
 	}
diff --git a/identity-card-microservice/src/main/java/com/example/hr/events/EmployeeHiredEvent.java b/identity-card-microservice/src/main/java/com/example/hr/events/EmployeeHiredEvent.java
index 627acab..d30cdef 100644
--- a/identity-card-microservice/src/main/java/com/example/hr/events/EmployeeHiredEvent.java
+++ b/identity-card-microservice/src/main/java/com/example/hr/events/EmployeeHiredEvent.java
@@ -7,6 +7,9 @@
  */
 public class EmployeeHiredEvent extends BusinessEvent {
 
+	public EmployeeHiredEvent() {
+	}
+
 	public EmployeeHiredEvent(String eventId, String topic, Object data) {
 		super(eventId, topic, data);
 	}