Section 46(4)(c) in West Bengal Municipal (Employees' Service) Rules, 2010
(c)Retrospective Revision It is not considered advisable that any order revising the rate of subsistence allowance should be given retrospective effect. This is merely an advice of caution intended to serve, as a guideline to the competent authority ordering variation in subsistence allowance as such authority in all cases shall initiate action in sufficient time so that requisite order can take effect as soon as a suspended employee completes three months under suspension. This does not override the power of the competent authority conferred under this rule to review the subsistence allowance. As such in case an order for variation of subsistence allowance under this rule is passed by the competent authority (disciplinary or appellate) after quite some time from the expiry of the requisite three months and that authority is satisfied that the variation has got to be recorded in writing and orders accordingly, the same shall be valid and binding on all concerned.