diff --git a/addons/hr_payroll/models/hr_payslip.py b/addons/hr_payroll/models/hr_payslip.py
index c9d14c47495..93ee4d42393 100644
--- a/addons/hr_payroll/models/hr_payslip.py
+++ b/addons/hr_payroll/models/hr_payslip.py
@@ -194,7 +194,7 @@ class HrPayslip(models.Model):
                         current_leave_struct['number_of_days'] += leave_time / work_hours
 
             # compute worked days
-            work_data = contract.employee_id.get_work_days_data(day_from, day_to, calendar=contract.resource_calendar_id)
+            work_data = contract.employee_id.with_context(no_tz_convert=True).get_work_days_data(day_from, day_to, calendar=contract.resource_calendar_id)
             attendances = {
                 'name': _("Normal Working Days paid at 100%"),
                 'sequence': 1,
diff --git a/addons/resource/models/resource.py b/addons/resource/models/resource.py
index ebb2ab7ba6f..4ba68077ace 100644
--- a/addons/resource/models/resource.py
+++ b/addons/resource/models/resource.py
@@ -417,8 +417,9 @@ class ResourceCalendar(models.Model):
         if not end_dt:
             end_dt = datetime.datetime.combine(start_dt.date(), datetime.time.max)
 
-        start_dt = to_naive_user_tz(start_dt, self.env.user)
-        end_dt = to_naive_user_tz(end_dt, self.env.user)
+        if not self.env.context.get('no_tz_convert', False):
+            start_dt = to_naive_user_tz(start_dt, self.env.user)
+            end_dt = to_naive_user_tz(end_dt, self.env.user)
 
         for day in rrule.rrule(rrule.DAILY,
                                dtstart=start_dt,
diff --git a/addons/resource/models/resource_mixin.py b/addons/resource/models/resource_mixin.py
index fcee4086ca3..477fc3033e3 100644
--- a/addons/resource/models/resource_mixin.py
+++ b/addons/resource/models/resource_mixin.py
@@ -51,6 +51,7 @@ class ResourceMixin(models.AbstractModel):
         days_count = 0.0
         total_work_time = timedelta()
         calendar = calendar or self.resource_calendar_id
+        calendar = calendar.with_context(no_tz_convert=self.env.context.get('no_tz_convert', False))
         for day_intervals in calendar._iter_work_intervals(
                 from_datetime, to_datetime, self.resource_id.id,
                 compute_leaves=True):