ASSAM MATCH COMPANY LIMITED vs BIJOY LAL SEN & OTHERS

The Supreme Court ruled that the alteration of the holiday for Kalipuja from 11th November to 12th November by the employer constituted a change in the conditions of service under Section 9A of the Industrial Disputes Act, 1947. The Court emphasized that such changes require compliance with the provisions of Section 33 and Section 9A, which were not followed in this case. Consequently, the Court upheld the Labour Court's decision that the employer acted illegally by changing the holiday without proper procedure and denying wages for the original holiday.