Two combos of words set:
1) Pay for work - In this scenario, the employee is regular, required to attend all days, has fixed duty hours, and is eligible for all workmen benefits, including overtime.
2) Pay to work - In this case, the employee is not regular, required to attend on any stipulated date, and can work for hours as they wish, but must complete the job domain at their ease. Consultants, lawyers, and CAs are not regular employees of the establishment. They may work throughout the year but only for finalizing tasks like work completion or filing returns, which are not done on a daily basis. It could be a full-day job for a whole month or just a few hours in a month. They are not enrolled in the payroll or attendance register.
In short, the consultant is treated similarly to other workers like plumbers, electricians, or those involved in miscellaneous tasks required by the industry at regular intervals. To claim maternity benefits, the employee must have been a regular employee for a certain period in the past. ESIC/EPF may not be deducted if the gross payout is over 21,000 per month, but attendance still matters.
Usually, in such instances, employers request invoices or bills from consultants, on which TDS is deducted under section 194C of the IT Act. Calculate your position in the establishment, then proceed with the claim.