Nature of Code for Business of supply of labour

an asseessee is engaged in supply of labour on contract basis and gets receipts from the contratee after deduction of tds u/s 194c . as the nature of codes for the business in itrs have changed this year , I am unable to find any such business of supply of labour in the list.
kindly guide me about the nature of code of supply of labour on contract basis as per the new business codes listed in itrs..