5. The deceased employee K.Pandiyan was working as conductor. Between 08.05.1994 and 23.06.1994, he had absented himself without any prior permission. Therefore, the management sent a memo dated 23.06.1994 to his known residence and the same was returned with an endorsement 'Intimation dropped'. Thereafter, the management issued a charge memo and after conducting domestic enquiry ultimately, passed an order of dismissal against the deceased workman. The management filed an approval petition before the industrial tribunal, Chennai. During the pendency of the approval petition, the workman passed away on 20.06.2017 and his legal heirs were impleaded before the tribunal. The 1 st respondent in W.P.No.24115 of 2019 is the wife of the deceased employee and she states that she was working as a constable in Tamil Nadu Police. The contention that the memo was returned because of a Page No.4 of 8