diff --git a/addons/hr_attendance/report/attendance_by_month.py b/addons/hr_attendance/report/attendance_by_month.py
index 069c1adad88..2b708434317 100644
--- a/addons/hr_attendance/report/attendance_by_month.py
+++ b/addons/hr_attendance/report/attendance_by_month.py
@@ -34,10 +34,10 @@ from tools import ustr
 one_day = relativedelta(days=1)
 month2name = [0, 'January', 'February', 'March', 'April', 'May', 'Jun', 'July', 'August', 'September', 'October', 'November', 'December']
 
-#def hour2str(h):
-#    hours = int(h)
-#    minutes = int(round((h - hours) * 60, 0))
-#    return '%02dh%02d' % (hours, minutes)
+def hour2str(h):
+    hours = int(h)
+    minutes = int(round((h - hours) * 60, 0))
+    return '%02dh%02d' % (hours, minutes)
 
 def lengthmonth(year, month):
     if month == 2 and ((year % 4 == 0) and ((year % 100 != 0) or (year % 400 == 0))):
@@ -85,18 +85,12 @@ class report_custom(report_rml):
                     for att in attendences:
                         dt = datetime.strptime(att['name'], '%Y-%m-%d %H:%M:%S')
                         if ldt and att['action'] == 'sign_out':
-                           tot_time = (dt - ldt).seconds
-                           hrs, remainder = divmod(tot_time, 3600)
-                           min, sec = divmod(remainder, 60)
-                           if min < 10:
-                               wh += float((str(hrs))+ '.' + '0' +(str(min)))
-                           else:
-                               wh += float((str(hrs))+ '.' + (str(min)))
+                            wh += (float((dt - ldt).seconds)/60/60)
                         else:
                             ldt = dt
                     # Week xml representation
-#                    wh = hour2str(wh)
-                    today_xml = '<day num="%s"><wh>%s</wh></day>' % ((today - month).days+1, round(wh,2))
+                    wh = hour2str(wh)
+                    today_xml = '<day num="%s"><wh>%s</wh></day>' % ((today - month).days+1, (wh))
                     dy=(today - month).days+1
                     days_xml.append(today_xml)
                     today, tomor = tomor, tomor + one_day
diff --git a/addons/hr_attendance/report/timesheet.py b/addons/hr_attendance/report/timesheet.py
index de5bf225b4d..7203b7d4f1d 100644
--- a/addons/hr_attendance/report/timesheet.py
+++ b/addons/hr_attendance/report/timesheet.py
@@ -84,14 +84,7 @@ class report_custom(report_rml):
                     for att in attendances:
                         dt = datetime.strptime(att['name'], '%Y-%m-%d %H:%M:%S')
                         if ldt and att['action'] == 'sign_out':
-                           tot_time = (dt - ldt).seconds
-                           hrs, remainder = divmod(tot_time, 3600)
-                           min, sec = divmod(remainder, 60)
-                           if min < 10:
-                               wh = float((str(hrs))+ '.' + '0' +(str(min)))
-                           else:
-                               wh = float((str(hrs))+ '.' + (str(min)))
-                           week_wh[ldt.date().weekday()] = week_wh.get(ldt.date().weekday(), 0) + round(wh,2)
+                            week_wh[ldt.date().weekday()] = week_wh.get(ldt.date().weekday(), 0) + (float((dt - ldt).seconds)/3600)
                         else:
                             ldt = dt
 
@@ -100,10 +93,10 @@ class report_custom(report_rml):
                 for idx in range(7):
                     week_repr.append('<%s>' % num2day[idx])
                     if idx in week_wh:
-                        week_repr.append('<workhours>%s</workhours>' %(str(week_wh[idx])).replace('.','h'))
+                        week_repr.append('<workhours>%sh%02d</workhours>' % to_hour(week_wh[idx]))
                     week_repr.append('</%s>' % num2day[idx])
                 week_repr.append('<total>')
-                week_repr.append('<worked>%s</worked>' % str(sum(week_wh.values())).replace('.','h'))
+                week_repr.append('<worked>%sh%02d</worked>' % to_hour(reduce(lambda x,y:x+y, week_wh.values(), 0)))
                 week_repr.append('</total>')
                 week_repr.append('</week>')
                 if len(week_repr) > 21: # 21 = minimal length of week_repr