An example of how unions directly violate individual liberty:
the challenge in the Knox case involved a special assessment to workers on top of usual dues. In 2005, the SEIU first issued its normal Hudson notice to nonmembers. After the opt-out period expired, the SEIU then unilaterally raised dues 25 percent, supposedly to raise money to fight several ballot initiatives. This time, the SEIU did not give nonmembers a chance to opt out. Instead, it sent out a letter announcing it was increasing dues to raise more money for its political accounts. It initially denied refunds to workers who asked for them. Dianne Knox and other nonunion workers sued.