SECTION 1.  Section 2 of chapter 150E of the General Laws is hereby amended by striking the section in its entirety and inserting in place thereof the following section:-

              ''Section 2.  Employees shall have the right of self-organization and the right to form, join or assist any employee organization for the purpose of bargaining collectively through representatives of their own choosing on questions of wages, hours and other terms and conditions of employment, and to engage in lawful, concerted activities for the purpose of collective bargaining or other mutual aid or protection, free from interference, restraint or coercion.  An employee shall have the right to refrain from any or all such activities.  An employee who chooses to refrain from these activities shall not be required to pay dues, fees or other charges of any kind in order to secure or continue employment, nor shall he be bound by the terms of employment negotiated by the employee organization.  Further, said employee and the employer retain the right to negotiate mutually agreeable terms of employment independent of any terms that bind the employer or any employees who are members of the employee organization.

                This section supersedes all contradictory provisions of any other section of chapter 150E.  All such contradictory provisions are to be considered null and void."