1) any organization employing more than 20 persons is necessarily required to get registered with the EPFO.
2) It is mandatory to own a EPF account if you are in job and draws a salary of up to Rs.15,000 per month. EPF is optional for individuals drawing salary more than Rs.15,000 per month.
3) Irrespective of type of organization (except the exempt categories) be it proprietorship, partnership firm, LLP or company, etc., if the number of employees exceed 20 during any time of the financial year, registration with EPFO is mandatory.
4) under section 14B provident fund commissioner has power to impose damages on employer for default in payment of contribution to the fund