Service tax querry

Sir

My client is private ltd co and  engaged in real estate as builder cum developer.

The company is recieving invoice from sub contractor who provides labour. However,  we have checked and confirmed that labour are not under supervision of company hence reverse charge mechanism not applicable.

My querry is

Is there any provision in service tax law which obligates the company to get the registeration number of that contractor and get the tax deposited.

I mean if that contractor is not charging service tax, in that case is the company legally bound to force that contractor for service tax compliance.

The invoice amount already exceeded Rs 9.00 lacs

Thanks

Please reply

its urgent