Minn. Stat. § 196.04: RULES.

Subdivision 1. Promulgation.

The commissioner shall adopt reasonable and proper rules to govern the procedure of the divisions of the department and to regulate and provide for the nature and extent of the proofs and evidence and the method of taking and furnishing the same, in order to establish the right to benefits provided for by the law. Such rules shall become effective when approved by the attorney general and then be filed in the Office of the Secretary of State.

Subd. 2. Existing rules to govern.

Until modified or repealed by the commissioner, all orders, rules and permits or other privileges issued or granted with respect to any function consolidated hereunder, and in effect at the time of such consolidation, shall continue in effect to the same extent as if such consolidation had not occurred.