The security services is one of the most unorganised labor sector in India. There is no union/representatives for them, hence, their pay & working conditions are very worse. To quote an example, the service provider, ie., Security services agency receives the payment for 3 personnel whereas practically it deploys only 2 persons and the salary being paid to them is very meagre (if the agency acquires payment of Rs. 15,000/- per head, it distributes only Rs. 5,000 to its' personnel, which is highly irregular/exploitation. I presume, the number of personnel employed in this sector are more than the number of employees in Indian Railways). But, sadly there is no statutory protection available to these employees regarding any special allowances etc.,
The client is not responsible for any payment/allowances, The primary employer is responsible for pay, P.F., ESI., only. There is no provision available regarding mandatory allowances.