diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/VirtualWorker.java b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/VirtualWorker.java
index fe75fd8f7..61036d80c 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/VirtualWorker.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/VirtualWorker.java
@@ -30,6 +30,7 @@ import org.navalplanner.business.common.Registry;
  * This class models a VirtualWorker.
  *
  * @author Lorenzo Tilve Álvaro <ltilve@igalia.com>
+ * @author Fernando Bellas Permuy <fbellas@udc.es>
  */
 public class VirtualWorker extends Worker {
 
@@ -72,6 +73,11 @@ public class VirtualWorker extends Worker {
         this.observations = observations;
     }
 
+    @AssertTrue
+    @Override
+    public boolean checkConstraintUniqueFirstNameSurnameNif() {
+        return true;
+    }
 
     @AssertTrue(message = "Virtual worker group name must be unique")
     public boolean checkConstraintUniqueVirtualGroupName() {
diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Worker.java b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Worker.java
index aca6bd991..577929108 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Worker.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Worker.java
@@ -128,12 +128,7 @@ public class Worker extends Resource {
     }
 
     @AssertTrue(message = "Worker with the same first name, surname and nif previously existed")
-    public boolean checkConstraintUniqueFirstName() {
-
-        /* Check if it makes sense to check the constraint .*/
-        if (this instanceof VirtualWorker) {
-            return true;
-        }
+    public boolean checkConstraintUniqueFirstNameSurnameNif() {
 
         if (!areFirstNameSurnameNifSpecified()) {
             return true;