Provident fund registration is mandatory if the number of employees exceeds 20. However, our Ns Tax consultancy will help you with PF registration. Because, every company has to offer a PF to its employees. The application of the PF registration is made with Digital signature of the director of the company. & ESI Stands for Employee State Insurance. This is managed by an Employee State Insurance Corporation. Hence, this scheme is started for the workers to provide them with a huge variety of medical, monetary, and other benefits from the employer. So, any company having more than 10 employees with a maximum salary of 15,000/- has to mandatorily register for ESI.