Are you referring to contracts/contracts labours under Contract Labour regulations & abolition act ?
If yes, you need to have a system in place to comply with all legal provisions applicable to them. Please see attachment it shall be helpful to them.
You can introduce some clause in the "contract" itself to impose upon the contractors to comply with uniform, safety shoes and other code of conduct.
Contract Labour Management is serious subject and having legal and financial impact on one's business.
I would advise you to seek help of professional/consultant to implement the same.
99 98 97 10 65
30th April 2013 From India, Mumbai
And We Do Not Have Any Contractor Policy For The Third Party
Contractors Who Are Working With Us. Our Management Want Me To
Create A Contractor Policy. I Never Came Across
Such Kind Of Policy And I Would Like To Request All Of You To Give
Me Some Ideas About The Same Kind Of Policies That You Are
Following In Your Company.
Thanks In Advance.
25th March 2015 From India, Ghaziabad