diff --git a/hr-luncheon-voucher/README.rst b/hr-luncheon-voucher/README.rst
index ae4e169..ccad1d9 100644
--- a/hr-luncheon-voucher/README.rst
+++ b/hr-luncheon-voucher/README.rst
@@ -27,6 +27,7 @@ Configuration
 1. Go to ``Configuration > Technical > Calendar > Meeting Types`` and define the meeting categories which cancel the daily luncheon voucher distribution.
 2. Go to ``Configuration > General Settings > Employees`` and define if employees need to work the whole day to get a luncheon voucher.
 3. Go to ``Employees`` and define for each employee the default number of luncheon vouchers to distribute in each distribution campaign.
+4. Go to ``Configuration > Technical > Resource > Working Times`` and create Working Times for each combination of attendance that you have in your company. Do not forget to indicate which period are effectively attended.
 
 Use
 ===
diff --git a/hr-luncheon-voucher/__manifest__.py b/hr-luncheon-voucher/__manifest__.py
index e83cc4a..967763b 100755
--- a/hr-luncheon-voucher/__manifest__.py
+++ b/hr-luncheon-voucher/__manifest__.py
@@ -2,7 +2,7 @@
 {
     "name": "HR Luncheon Voucher",
     "category": "Human Resources",
-    "version": "14.0.1.0",
+    "version": "14.0.1.1.0",
     "summary": "Manage luncheon vouchers credit and distribution",
     "author": "Elabore",
     "website": "https://elabore.coop/",
@@ -13,6 +13,7 @@
         "base",
         "calendar",
         "hr",
+        "hr_effective_attendance_period",
         "hr_holidays",
         "resource",
     ],
diff --git a/hr-luncheon-voucher/models/resource.py b/hr-luncheon-voucher/models/resource.py
index e79f06c..f55451f 100644
--- a/hr-luncheon-voucher/models/resource.py
+++ b/hr-luncheon-voucher/models/resource.py
@@ -7,7 +7,11 @@ class ResourceCalendar(models.Model):
     _inherit = "resource.calendar"
 
     def _retrieve_day_matching_attendances(self, day):
-        domain = [("calendar_id", "=", self.id),("dayofweek", "=", day.weekday())]
+        domain = [
+            ("calendar_id", "=", self.id),
+            ("dayofweek", "=", day.weekday()),
+            ("effective_attendance_period", "=", True)
+        ]
         if self.two_weeks_calendar:
             # Employee has Even/Odd weekly calendar
             week_type = 1 if int(math.floor((day.toordinal() - 1) / 7) % 2) else 0