diff --git a/modules/worker/front/time-control/index.js b/modules/worker/front/time-control/index.js
index 094e200a4..9a4c4b559 100644
--- a/modules/worker/front/time-control/index.js
+++ b/modules/worker/front/time-control/index.js
@@ -4,10 +4,11 @@ import './style.scss';
 import UserError from 'core/lib/user-error';
 
 class Controller extends Section {
-    constructor($element, $, vnWeekDays) {
+    constructor($element, $, vnWeekDays, moment) {
         super($element, $);
         this.weekDays = [];
         this.weekdayNames = vnWeekDays.locales;
+        this.moment = moment;
         this.entryDirections = [
             {code: 'in', description: this.$t('In')},
             {code: 'middle', description: this.$t('Intermediate')},
@@ -364,14 +365,8 @@ class Controller extends Section {
     }
 
     getWeekNumber(date) {
-        const tempDate = new Date(date);
-        let dayOfWeek = tempDate.getDay();
-        dayOfWeek = (dayOfWeek === 0) ? 7 : dayOfWeek;
-        const firstDayOfWeek = new Date(tempDate.getFullYear(), tempDate.getMonth(), tempDate.getDate() - (dayOfWeek - 1));
-        const firstDayOfYear = new Date(tempDate.getFullYear(), 0, 1);
-        const differenceInMilliseconds = firstDayOfWeek.getTime() - firstDayOfYear.getTime();
-        const weekNumber = Math.floor(differenceInMilliseconds / (1000 * 60 * 60 * 24 * 7)) + 1;
-        return weekNumber;
+        const tempDate = new Date(Date.UTC(date.getFullYear(), date.getMonth(), date.getDate()));
+        return this.moment(tempDate).isoWeek();
     }
 
     isSatisfied() {
@@ -499,7 +494,7 @@ class Controller extends Section {
     }
 }
 
-Controller.$inject = ['$element', '$scope', 'vnWeekDays'];
+Controller.$inject = ['$element', '$scope', 'vnWeekDays', 'moment'];
 
 ngModule.vnComponent('vnWorkerTimeControl', {
     template: require('./index.html'),