1 9 5 1 ▁declared ▁that ▁manufact uring ▁indust ries ▁under ▁its ▁First ▁Sch edule ▁were ▁under ▁common ▁central ▁government ▁reg ulations ▁in ▁addition ▁to ▁whatever ▁laws ▁state ▁government ▁en act . ▁It ▁reserved ▁over ▁ 6 0 0 ▁products ▁that ▁can ▁only ▁be ▁manufact ured ▁in ▁small - scale ▁enter pr ises , ▁thereby ▁reg ulating ▁who ▁can ▁enter ▁in ▁these ▁business es , ▁and ▁above ▁all ▁placing ▁a ▁limit ▁on ▁the ▁number ▁of ▁employees ▁per ▁company ▁for ▁the ▁listed ▁products . ▁The ▁list ▁included ▁all ▁key ▁technology ▁and ▁industrial ▁products ▁in ▁the ▁early ▁ 1 9 5 0 s , ▁including ▁products ▁r anging ▁from ▁certain ▁iron ▁and ▁steel ▁products , ▁fuel ▁derivatives , ▁mot ors , ▁certain ▁mach in ery , ▁machine ▁tools , ▁to ▁cer am ics ▁and ▁scientific ▁equipment . ▁ ▁State ▁laws ▁Each ▁state ▁in ▁India ▁may ▁have ▁special ▁labour ▁reg ulations ▁in ▁certain ▁circumstances . ▁Every ▁state ▁in ▁India ▁makes ▁its ▁own ▁reg ulations ▁for ▁the ▁Central ▁Act . ▁The ▁reg ulations ▁may ▁vast ly ▁differ ▁from ▁state ▁to ▁state . ▁The ▁forms ▁and ▁procedures ▁used ▁will ▁be ▁different ▁in ▁each ▁state . ▁The ▁Central ▁Government ▁is ▁in ▁the ▁process ▁on ▁simpl f ying ▁these ▁multiple ▁state ▁laws ▁into ▁ 4 ▁Labour ▁C odes . ▁They ▁are ▁Code ▁on ▁ 1 . ▁W ages , ▁ 2 . ▁Social ▁Security ▁and ▁W elf are , ▁ 3 . ▁Indust rial ▁Rel ations , ▁ 4 . ▁Occ up ational ▁Saf ety ▁and ▁Health ▁and ▁Working ▁Cond