Employees shall have the right to:
(1) Organize, form, join or assist any employee organization, provided that membership in, or an obligation to pay any dues, fees, assessments or other charges to, an employee organization shall not be required as a condition of employment.
(2) Negotiate collectively or grieve 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) Be represented by their exclusive representative, if any, without discrimination.