1. The Commissioner may disapprove a rate filed by an insurer at any time.
2. The Commissioner shall disapprove a rate if:
(a) An insurer has failed to meet the requirements for filing a rate pursuant to this chapter or the regulations of the Commissioner;
(b) The rate is inadequate or unfairly discriminatory and the interaction among insurers and employers is competitive; or
(c) A rate is inadequate, excessive or unfairly discriminatory and the Commissioner has found and issued an order that the interaction among the insurers and employers is not competitive.