; (2) supervise or conduct elections to determine whether a labor organization has been selected as an exclusive representative by a voting majority of the employees in an appropriate unit; (3) resolve issues relating to the duty to bargain in good faith; (4) conduct hearings and resolve complaints of unfair labor practices; (5) resolve exceptions to the awards of arbitrators; (6) protect the right of each employee to form, join, or assist any labor organization, or to refrain from any such activity, freely and without fear of penalty or reprisal, and protect each employee in the exercise of such right