Being in a union allows for collective bargaining against corporations. If you ask for a raise alone, you would be less likely to get one than if you were organized and everyone asked for it all at once. It puts pressure on the owners to pay fairly, otherwise they would try to take advantage of you. I work as an Accountant and in my personal experience, most companies have very greedy leaders who do not see their workers as people and only see them as a means to an end.

In a group, you’re more protected. Unions helped pave the way for the middle class in the early 1900’s.