ESIS is a leading provider of managed claim services, integrated disability management and customized risk management solutions. Provide each employee with the employee registration form (Form 6) to fill out.Sign in or create a profile to view all of your ECSI accounts together. Sign In To an existing profile Sign In Username Username Forgot Username? This file contains the ESIC form that needs to be filled in capital letters. It provides detailed instructions for applicants to ensure accurate submissions. Start here to learn how to register for a user profile, find your account key, connect an account to your user profile, and more.