Even if you get 12 month salary you still lose out 1 months salary. Now think how if you cant figure out then read below.
Every month have 4weeks but every third month have 5 weeks so in a year you loose 4 weeks that is one month's salary, Because every 3rd month you work for 5 weeks and get paid for 4weeks. Unless you are paid at 4weeks interval every month or paid weekly then you should have 13 pay packets or 52 pay packets if paid weekly as it is here in the west.
52 weeks of a year devided by 4 is 13months and not 12 months. 12 months are only calendar months and not financial months.
