Right minus to minus work lawsRighttowork laws A.requires workers to join the union after employment. requires workers to join the union after employment.requires workers to join the union after employment. B.made closed shops and some other union practices illegal. made closed shops and some other union practices illegal.made closed shops and some other union practices illegal. C.guarantees workers the right to form unions and bargain collectively. guarantees workers the right to form unions and bargain collectively.guarantees workers the right to form unions and bargain collectively. D.made it illegal to require union membership as a condition of employment. made it illegal to require union membership as a condition of employment.made it illegal to require union membership as a condition of employment