Pls note my reply:-
1. If you have considered those Nos in your / contractorís Labour Licence than such workers must be covered under CLRA and need to consider their detail in Half Yearly Labour Return / Annual Return under Shram Suvidha.
2. As per my opinion though primarily deducting PF-ESI is depend whether the sub-contractor is covered under PF-ESI or not. If covered, than those deduction are must. But if not covered than you must take an indeminity bond from the sub-contracotr duly stating if in future (even after contract closure) any liability arises due to PF-ESI or such compliance than the sub-contractor will be solely responsible for the same. As stated above if the work is risk inherent activities, ask the sub-contractor to take EC Policy for required No. of personnel deployed at site. By doing so, if any worker met with accident which lead to Death or Disability, he will get compensation from the Insurance Company / Compensation Board. Otherwise it will lead to huge cost to you and to the sub-contractor.
3. You canít escape by overlooking the compliance fulfillment. Being prime contractor you will be responsible for all activities of your sub-contractor/s. In govt projects, they defined hard terms in the agreement, but donít focus so much. But in case of any happening put all the pressure of us (Prime Contractor). So we need to be more focused while engaging any sub-contractor.
Additionally I would advice, first check whether the complaince cost (PF-ESI, Bonus, Leave, Gratuity etc.) have been included in the WO value (Agreement issued to the sub-contractor). If so, than you are in double loss. If such cost not considered take your management call whether to include such cost and make strict compliance. If they donít want to increase cost and avoid complaince level than in long run it can be harmful.
I have given detailed reply of your short query. That is due to my personal experiences.
Seniors can throw more light on the matter.