(1) The bargaining representative that has been determined to represent a majority of the employees in a bargaining unit must be certified by the commission as the exclusive bargaining representative of, and must represent, all the employees within the unit without regard to membership in the bargaining representative.

(2) An employee at any time may present their grievance to the employer and have such grievance adjusted without the intervention of the exclusive bargaining representative, if the adjustment is not inconsistent with the terms of a collective bargaining agreement then in effect, and if the exclusive bargaining representative has been given reasonable opportunity to be present at any initial meeting called for the resolution of the grievance.