What's good about a union?

More companies are closing and more workers are made redundant here.  People feel for the workers but
, when workers' unions ask for more  salary, employers will find it difficult to stay viable.  How else to give a raise other than to increase the price of their products and when price increases, their products may not be as saleable as before.  Sometimes, workers just want to earn a living and remain at work for as long as he can.  Unions simply make this hard to do.