What was the effect on workers of the establishment of an open shop at a company? Group of answer choices Workers were required to join a union, which was typically manipulated by management. Workers could choose to join a union, but might face harassment and other discriminatory practices. Workers were not allowed to join a union, and their lack of job security fueled an anxiety that drove them to work hard. Workers could receive benefits such as medical care and pensions as long as they agreed not to join a union. Workers could choose to join a union as long as they agreed not to strike