In some industries, the labor productivity of union workers exceeds the labor productivity of nonunion workers. Which of the following might help explain the higher productivity of union workers? Check all that apply Higher union wage rates allow companies to attract more low-skilled workers. Labor union enable workers to voice concerns about working conditions and safety issues, making them more confident and less intimidated by their employers and thus more productive. Unions are always more efficient than firms at discerning which workers are highly skilled and which are not. Labor unions foster a more stable work force, decreasing turnover.