Union corruption refers to illegal or unethical activities within labor unions, which are organizations that represent workers' interests. This can include embezzlement of funds, bribery, or misuse of union resources for personal gain. Such actions undermine the trust between union leaders and their members, potentially harming workers' rights and benefits. Corruption can also involve collusion with employers, where union officials may accept kickbacks in exchange for favorable treatment of the company. This compromises the union's role in advocating for fair wages and working conditions, ultimately affecting the well-being of its members and the integrity of the labor movement as a whole.