Böheim, René; Zweimüller, Martina - Institute for the Study of Labor (IZA) - 2009
hiring agency workers and trade union activity at the workplace, in particular, the type of collective bargaining agreements … between the employment of agency workers and union strength is weak, but positive. Furthermore, workplaces with collective … bargaining have lower wages in the presence of agency workers, suggesting that agency workers are hired against the unions. …