Hi ,

To set up the HR department , you first need to identify few factors :
1. Size of the company
2. Type of business
3. In which state you are operating

Secondly , about ESI and PF they are the statutory compliances but it also depends upon few factors :

1. Size of the business
2. Average salary of the employee
3. State in which u r operating

Thirdly, If your company is already been registered in ISO there are centain norms you must be following.

Like the 5 S culture , the record of the trainings , also there are various reports and records to be maintained .

Thanks
Anuradha