Legal Constraints on Changing Employment Terms
No employer can legally change the terms of service conditions stated in the offer letter/appointment letter, as it contains clauses that define the agreed terms of employment for both the employer and employee. Once the offer letter has been signed by both parties, no changes can be made without the mutual consent of the employee and employer, as per Section 9A of the ID Act. Any changes affecting workers, such as shifts, working hours, or service conditions, must be notified at least 21 days in advance to every worker before implementation.
Please refer to the case of T Rajamanickam v/s Binny Limited, where the Honorable Madras High Court ruled that reducing a worker's emolument without prior notice, contrary to the settlement between the management and workers, violates Section 9A of the ID Act.
Therefore, changes cannot be made without providing notice to workers or without the mutual consent of the employee.
Thanks and regards,
V. Shakya
HR and Labor Law Advisor