JUDGMENT :

S. Muralidhar, J.

This petition is directed against the order dated 17th November, 2015 passed by the Central Administrative Tribunal, Principal Bench, New Delhi ("CAT") dismissing the Petitioner's OA No.1271/2012. The petition also challenges the order dated 4th September, 2017 passed by the CAT, dismissing the Petitioner's Review Application being RA No. 39/2016, against the above order dated 17th November, 2015 in his OA.

2. The background facts are that the Petitioner was appointed as a Conductor with the Respondent/Delhi Transport Corporation ("DTC") in 1994. On 13th December, 1986, the Petitioner submitted an application to DTC requesting for leave, citing medical grounds, with effect from 15th December, 1986. The DTC sanctioned leave to him till 24th December, 1986. However, on account of his persisting illness, the Petitioner could not join back on the aforesaid date. He first submitted an application for extension of leave till 31st December, 1986; a second time, for extension till 15th February, 1987; and a third time, for extension till 7th May, 1987. Each of these applications was accompanied by medical certificates attesting to his continued ill health.

3. The D