There is no practical way out but to engage a regular employee to handle the work related to ESI. This employee's primary, or rather sole, duty will be to call each new employee to the cabin, register them under ESI, take a printout of a temporary ID card, and hand it over to the employee. It is up to the employee to decide whether to continue on the site. If continuing, they need to go to the ESIC with their family members, take a photograph, and get a smart card. I do not think that these daily wagers will come with their photographs when they come for work. If so, we are stuck. But one thing is clear: even if you do not register, we should be prepared to pay the contribution at the prescribed rate of 6.5% of wages paid. That's all.
Regards,
Madhu.T.K