Unions allowed workers to participate and to have some power in decision-making where management once held universal authority. In this century, unions remain to hold advantages and disadvantages for employees and managers. Unionized workers have better wages, benefits, working conditions, and so on. Same way, management take advantage of collective agreements that cannot be dispute making the costs associated with pay more predictable. They also have more stability with employees who enjoy their benefits, then, the turnover of employees is low, and therefore, investing in training is never a loss. (Saez, 2010). On the other hand, the major downfall of unions according to some economists is the way they can affect the labor environment. I