The ESI authorities cover industries under its Act. Every employee drawing less than Rs. 15,000 should be covered under the Act. When an accident takes place in the industry, the management has to forward the Accident Report in Form No. 12, giving the time, date, place of the accident, location of injury, quantum of injury, etc. On receipt of the report, the authorities visit the industry for inspection and submit the report to the higher-ups. Based on the report, they determine the compensation depending on the quantum of injury/nature of injury = loss of earning capacity. Such employees receive benefits (pension) until their death.
If your industry is not covered under the Act, as management, you have to bear all the costs of medical expenses, payment for the absent period, and the amount fixed by the compensation commissioner if the concerned party raises a dispute before the labor authorities. The Workmen Compensation Act defines and fixes the nature of injury and quantum of compensation.
I hope this has cleared your doubts.
Regards, G.K. Manjunath