Relief u/s 89 & requirement of form 10 e

One of my client is a employee in life insurance coporation of india Ltd. He received arrear salary for F.Y. 12-13, 13-14 & 14-15. He provide me From 16. In form 16 total computation is there with  relief u/s 89. As per section 89 form 10e is required to submit to Assessing office. Now my quiestion is that , should i submit form 10 E or it is responsibility of LIC (Employer).