▁The ▁norm s ▁in ▁fixing ▁and ▁revision ▁of ▁minimum ▁w ages ▁were ▁first ▁recommended ▁by ▁I LC , ▁ 1 9 5 7 . ▁ ▁Re vision ▁of ▁minimum ▁w age ▁rates ▁is ▁based ▁on ▁a ▁' cost ▁of ▁living ▁index ' ▁and ▁w ages ▁can ▁be ▁fixed ▁for ▁an ▁entire ▁state , ▁part ▁of ▁the ▁state , ▁class ▁or ▁classes ▁and ▁employ ments ▁per tain ing ▁to ▁these ▁categories . ▁The ▁fix ation ▁of ▁w ages ▁is ▁based ▁on ▁the ▁norm s ▁mentioned ▁and ▁a ▁w age ▁board ▁( d ifferent ▁for ▁different ▁industry ). ▁ ▁Under ▁the ▁Min imum ▁W ages ▁Act , ▁State ▁and ▁Central ▁Govern ments ▁have ▁the ▁power ▁to ▁fix ▁and ▁rev ise ▁minimum ▁w ages . ▁The ▁act ▁spec ifies ▁that ▁the ▁" app ropri ate " ▁government ▁should ▁fix ▁the ▁w ages ▁i . e . ▁if ▁the ▁w ages ▁to ▁be ▁fixed ▁are ▁in ▁relation ▁to ▁any ▁authority ▁of ▁Central ▁government ▁or ▁Railway ▁administration ▁then ▁the ▁Central ▁government ▁fixes ▁it . ▁However , ▁if ▁the ▁w age ▁rate ▁is ▁to ▁be ▁fixed ▁or ▁re vised ▁for ▁a ▁scheduled ▁employ ment , ▁the ▁respective ▁state ▁govern ments ▁fix ▁it . ▁The ▁Centre ▁fixes ▁the ▁National ▁floor ▁level ▁Min imum ▁W age ▁that ▁is ▁lower ▁than ▁most ▁states ' ▁respective ▁minimum ▁w ages . ▁The ▁ambigu ity ▁and ▁overlap ▁in ▁the ▁juris diction ▁of ▁both ▁these ▁t iers ▁of ▁government ▁have ▁caused ▁deb ates ▁and ▁controvers ies . ▁One ▁of ▁such ▁deb ates ▁revol ves ▁around ▁fixing