Public employees shall have the right to:
1. Organize, or form, join, or assist any employee organization.
2. Negotiate collectively through representatives of their own choosing.
3. Engage in other concerted activities for the purpose of collective bargaining or other mutual aid or protection insofar as any such activity is not prohibited by this chapter or any other law of the state.
4. Refuse to join or participate in the activities of employee organizations, including the payment of any dues, fees or assessments or service fees of any type.
5. Exercise any right or seek any remedy provided by law, including but not limited to those rights and remedies available under sections 70A.28 and 70A.29, chapter 8A, subchapter IV, and chapters 216 and 400.