Identify a statement that accurately explains the significance of labor unions. Multiple choice question. Unions are estimated to reduce the likelihood of seniority rights and just cause discipline and discharge provisions. Unionized workers are significantly less likely than comparable nonunion workers to receive health insurance and pensions. Unions reduce the likelihood of bringing grievance procedures that end in binding arbitration to the employment relationship. Unions often compress the wage structure within a workplace by reducing the difference between lower- and higher-paid workers