The best solution for your problem is hire an outsourcing company who will hire people on their roll for you. Also to avoid statutory deductions like PF and ESIC you need to keep their salary breakup over and above 21,000 /- and same need to be communicated and discussed with the outsourced vendor.
From India, Salem
For safer side cover them either Group Personal Accident Policy or Term Life Insurance Policy. Covering under such policies reduces Company's liabilities in case of accident, accidental death etc.
In offer letter of Sales employees, you may write consolidated salary includes all allowances & incentives.
From India, Thane
There is one solution that may work for you.
There is a scheme called NEEM - national employment enhancement mission. Check the need website for details.
It allows you to hire trainees for a period of 3-24 months from specified instructions that qualify under neem. They can be removed at any time without reason, and statutory deductions are not applicable to them for the duration of training. Obviously this only applies to freshers who have just finished their learning under NEEM
They are not off role since the comoany is paying them directly but probably may work for you
From India, Mumbai