Employer notice requirement: give 21 days' notice before changing specified employment conditions to workers likely to be affected. Employers proposing changes to conditions of service in matters specified in the relevant schedule must give prescribed notice to workers likely to be affected and shall not effect the change within twenty-one days of that notice. No notice is required where the change follows a settlement or award, where affected persons are subject to specified civil service rules, where the change follows orders of the appropriate government, or in emergent shift-change situations made in consultation with the Grievance Redressal Committee.