diff --git a/modules/worker/back/models/worker.json b/modules/worker/back/models/worker.json
index 6d23c1b66..6e1371055 100644
--- a/modules/worker/back/models/worker.json
+++ b/modules/worker/back/models/worker.json
@@ -25,8 +25,7 @@
             "type" : "string"
         },
         "userFk": {
-            "type" : "number",
-            "required": true
+            "type" : "number"
         },
         "bossFk": {
             "type" : "number"