Section 7(1) in The Orissa Industries Service Rules, 1985
(1)Not more than [fifty per cent] [Substituted vide O.G.E. No. 925 dated 11.8.1995.] of total vacancies in [Group-B] [Substituted vide O.G. No. 41, Part III A Dated 8.10.2004.] of the service in any year may be filled up by promotion from among non-gazetted non-ministerial Class III field executive staff, namely :
