Hi,
According to my knowledge, employees who are drawing more than Rs. 15,000/- salary per month, other than conveyance (regular payment), need not to pay ESI contribution.
Suppose an employee is drawing a gross salary less than Rs. 15,000/- per month (regular payment as per appointment order) at the beginning of the contribution period (from April 2009 to September 2009) and is earning Variable Incentive, Production Bonus, Overtime, and Shift allowance separately in the same month. ESI contribution (1.75%) must be deducted from his total earnings.
In the middle of the contribution period, i.e., between April 2009 and September 2009, he received an increment and reached Rs. 18,000/- gross as regular payment per month, apart from earnings like Variable Incentive, Production Bonus, Overtime, and Shift allowance. In such a case, the employer must deduct ESI contributions on the total gross + earnings like Variable Incentive, Production Bonus, Overtime, Shift allowance till the end of the contribution period. Deduction can be stopped from the next contribution period onwards.
For PF, the deduction is restricted to the basic of his salary, i.e., Rs. 6,500 (not the gross). Employee contribution to PF is 12% of his basic, and the employer's contribution to PF is 12%, out of which 8.33% goes to the pension scheme of the employee, and the remaining 3.67% goes to the PF account of the concerned employee.