Rule 25(ii)(iv) prescribes that it shall be the condition of every licence that the rates of wages shall not be less than the rates prescribed under the for such employment where applicable, and where the rates have been fixed by agreement, settlement or award, not less than the rates so fixed, Rule 25(ii)(v)(a) prescribes that it shall be the condition of every licence that, "In cases where the workmen employed by the contractor perform the same or similar kind of work as the workmen directly employed by the principal employer of the establishment, the wage rates, holidays, hours of work and other conditions of service of the workmen of the contractor shall be the same as applicable to the workmen directly employed by the principal employer of the establishment on the same or similar kind of work: Provided that in the case of any disagreement with regard to the type of work the same shall be decided by the Chief Labour Commisioner (Central) whose decision shall be final." Similarly Rule 25(ii)(v)(b) provides that in other cases the wage rates, holidays, hours of work and conditions of serv ice of the workmen of the contractor shall be such as may be specified in this behalf by the Chief Labour Commissioner (Central).