You may go ahead with your local lawyer but please ask him to refer section 25 F of the ID Act which makes it clear that one month notice (not 45 days notice) is required to be served and notice should also be served to the Labour Officer. As stated by me in my previous post, there is no permission required since the number of workers is not more than 100 but an intimation is required to be given to the government showing the reasons for retrenchment, the number of workers to be retrenched etc.
Madhu.T.K
Madhu.T.K