Okla. Stat. tit. 27A, § 2-7-133
The Department shall not oppose intervention by any person when permissive intervention may be authorized by statute or rule.
Laws 1981, HB 1238, c. 322, § 15, emerg. eff. July 1, 1981; Amended by Laws 1993, HB 1002, c. 145, § 116, emerg. eff. July 1, 1993; Renumbered from 63 O.S. § 1-2013.1 by Laws 1993, HB 1002, c. 145, § 359, emerg. eff. July 1, 1993.