This is in addition to the answers given by other members to the original query. If we analyse the scheme of the Contract Labor ( Regulation & Abolition ) Act,1970, we'll find that there are no provisions relating to working hours; so is the position about the Rules framed under the Act. Contract labor, per se, is a distinct class of labor engaged through contractor by any establishment on its incidental or other works which are non-perennial in nature. Therefore, whatever provisions relating to the regular workmen of the establishment in respect of working hours, rest intervals, weekly holidays, leave etc., as specified in the establishment-specific labor law for the establishment automatically become applicable to the contract labor also as long as they are employed therein. If such contract labor are engaged in any activity-specific works like building and other construction works, then their working hours are regulated by such special enactments like the BOCW Act,1996 or the MW Act,1948 in any other case.