▁formula ▁ ▁to ▁raise ▁the ▁minimum ▁bonus ▁from ▁ 4 % ▁to ▁ 8 . 3 3 % ▁( 1 / 1 2 th ▁of ▁annual ▁sal ary ). ▁The ▁Bon us ▁Review ▁Committee ▁appointed ▁in ▁ 1 9 7 1 ▁end ors ed ▁what ▁came ▁to ▁be ▁known ▁as ▁the ▁Kh ad il kar ▁formula . ▁The ▁Government ▁enfor ced ▁this ▁formula ▁by ▁the ▁Pay ment ▁of ▁Bon us ▁Act , ▁ 1 9 7 2 . ▁Under ▁the ▁Act , ▁the ▁quantum ▁of ▁minimum ▁bonus ▁was ▁raised ▁to ▁ 8 . 3 3 %. ▁This ▁practice ▁of ▁giving ▁one ▁month ' s ▁sal ary ▁as ▁bonus ▁to ▁workers ▁( es pecially ▁during ▁Di w ali ) ▁is ▁widely ▁followed ▁by ▁households ▁and ▁business es ▁even ▁today . ▁ ▁He ▁served ▁as ▁Deput y ▁Spe aker , ▁Lok ▁Sab ha ▁from ▁ 1 9 6 7 – 1 9 6 9 , ▁Minister ▁of ▁Supp ly , ▁from ▁ 1 9 6 9 – 1 9 7 1 , ▁and ▁Minister ▁of ▁Labour ▁and ▁Re h abil itation ▁in ▁ 1 9 7 1 . ▁ ▁As ▁a ▁social ▁and ▁political ▁activ ist , ▁Kh ad il kar ▁served ▁several ▁terms ▁of ▁imprison ment ▁between ▁ 1 9 3 0 ▁and ▁ 1 9 4 5 ▁during ▁India ' s ▁freedom ▁movement . ▁He ▁was ▁one ▁of ▁the ▁founder ▁M embers ▁of ▁the ▁Congress ▁Social ist ▁Party ▁in ▁ 1 9 3 4 , ▁and ▁elected ▁member ▁of ▁its ▁National ▁Executive ▁in