3.The learned counsel for the petitioner submitted that the petitioner initially joined as Junior Assistant (Apprentice) on 04.03.1987 in the Tamil Nadu Goods Transport Corporation and thereafter, his service was regularized as Junior Assistant on 01.03.1989. The petitioner was promoted to the post of Superintendent in the 2nd respondent Corporation on 01.01.2013 and he retired from service on attaining the age of superannuation on 31.05.2013. The petitioner is drawing the pension from the date of retirement. For the purpose of attending the maternity of his daughter, the petitioner went and stayed at United States of America from September 2016 to January 2017 and the same was also intimated to the third respondent. But his pension was reduced from Rs.13,178/- to Rs.4,796/- for a period of five months and thereafter, the third respondent restored the normal pension on February 2017.The reduction of pension was informed by the respondents that dearness allowance was not eligible to the pensioner who stayed abroad, as per G.O.Ms.No.496, Finance (Pension) Department, dated 15.09.1998 and G.O.Ms.No.437, Transport (E) Department, dated 08.11.2017 which