VA of the Act which dealt with 'lay off and retrenchment ' in the Amending Act, and analysing section 25F as it then stood, S.K. Das, J. speaking for the Constitution Bench observed that in the first part of the section both the words 're trenched ' and 'retrenchment ' were used and obviously they had the same meaning except that one was verb 126 and the other was a noun and that to appreciate the true scope and effect of section 25F one must first understand what was meant by the expression 'retrenched ' or 'retrenchment ' Analysing the definition of 'retrenchment ' in section 2(00) the Court found in it the following four essential require ments: (a) termination of the service of a workman;, (b) by the employer; (c) for any reason whatsoever; and (d) other wise than as a punishment inflicted by way of disciplinary action.