Understanding ESI Deductions and Coverage
ESI is subject to a deductible on the wages that an employee earns on a regular basis, i.e., Basic, HRA, Conveyance, Special Allowance, etc. Also, please note that payments made to an employee with a periodicity of less than two months shall also be considered as wages, i.e., Incentive, OT, Commission, thus they shall also attract ESI.
Now, what I understand from your query is related to the coverage, and it seems there is a slight confusion between wage and incentive. Please note that the variable incentive paid to the employees should not be considered for employee coverage in ESI, such as the ceiling limit of Rs. 15,000, because it is variable in nature.
I hope this will clear all your doubts. In case you still need further clarification, please write.
Regards,
Pushkar Bisht