Industrial Disputes Act (14 of 1947) , S.25F— Evidence Act (1 of 1872) , S.101, S.102, S.103, S.104, S.114(f)— Retrenchment - Conditions precedent for - Non-compliance with, alleged - General principles of Evidence Act apply to industrial adjudication - Burden of proof lies on workmen/respondent to show that he had worked for 240 days in preceding twelve months prior to his alleged retrenchment - Muster Roll not called upon by workman from office/Municipal Corporation before Tribunal but produced before Supreme Court - Workman also not able to show terms and conditions of his offer of appointment and remuneration received by him, for working during aforesaid period - No witness examined by workman in support of his case - Merely because appellant-Municipal Corporation did not produce best evidence which was in its possession - No adverse inference can be drawn against appellant/Municipal Corporation - Failure of respondent/workman to show that he had completed 240 days of working in year - Retrenchment, not illegal. C.W.P. No. 624 of 2000, D/- 3-5-2001 (Punj and Har), Reversed.Gopal Krishnaji Ketkar v. Mohamed Haji Latif, AIR 1968 SC 1413, Disting. (Para 13 14 15 19 21) .....