Nowadays, you have a system of online registration at
Sun Java System Application Server - Server Running. You can register yourself online with your employer code for ESIC. Fill in the employee details, upload the images, and you will be provided with the ESIC numbers for respective employees.
At the same time, you can submit the forms to the ESIC office. The ESIC office will provide an acknowledgment of receipt of the forms and ask you to collect the ESIC cards of employees within a stipulated time period. On the given date, collect the cards from the ESIC office and make the cards available to the employees.