Dear Prashant,
As Mr. Rajkumar said, what was the necessity to implement in such a hurry? Was it based on some prior understanding, agreement, or settlement? However, if you want to go for a change in service conditions:
1. Incorporate it in the Long Term Settlement and complete necessary statutory formalities before implementing.
2. If LTS is far away, then call the union for negotiation, incentivizing them to agree to the implementation of a 7-day work week. If they agree, complete Form B and begin implementation.
3. If both options are not possible, complete the necessary statutory formalities; i.e., Change of Service Condition notice, Form 11 (Period of work), and start implementing.
4. If the union files a 2K petition before Conciliation, appear and obtain a favorable order.
5. If no favorable order is received, challenge it before the High Court and continue working.
Regards,
Udayakumar G [Phone Number Removed For Privacy Reasons]