The employer can register any Branch or Sales Office through ESIC Portal using his credentials and his unique primary registration code number. Users must read the particulars in the form and fill up as per the instructions.Fill in the form and submit it to ESIC for Esi registration on the ESI Online Portal. System will allow registration of employees where difference between the date of appointment and date of registration is more than 10 days. Get esi registration easily now. Provide each employee with the employee registration form (Form 6) to fill out. Upload the necessary documents as specified in the application form.