The Government of Bihar, vide notification No. 5/M.W-40-16/2021 L&R-5362, dated 27th September, 2023,
The Central Government, vide notification No. S.O. 2244(E), dated 23rd May, 2023
The Government of Bihar, vide notification No. 5/M.W-40-16/2021 L & R- 1687, dated 31st March, 2023