In Coate v. Omholt, 203 Mont. 488, 662 P.2d 591 (Mont. 1983), the Supreme Court of Montana struck down statutes that provided 90 day time limits within which the Montana Judiciary had to issue decisions.
The court held that the question of when cases were to be decided and the manner in which there were to be decided was a matter solely for the judicial branch of government to determine based on the separation of powers doctrine. Id. at 593.