Form 12 under ESI Act, is an accident report intimation to ESI to be submitted by management. You may go to ESI employer portal, and enter the employee accident report in Form 12. After submitting the details Form 12 accident will be created in the portal. Take a printout and give it to the workmen.
Similarly in Factories Act, there is a From 11 to be filled by the Management. This form has to be endorsed by the ESI dispensary for having submitted Form 12 and submit the same to Inspector of Factories of your jurisdiction
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