The only sound approach to collective bargaining is to work out an agreement that clarifies the rights and responsibilities of the parties, establishes principles and operates to the advantage of all concerned.
Many people do not realize that where unions have bargaining rights employers cannot raise wages or improve benefit plans any more than they can reduce them without of the consent of the union.
Unfortunately, in collective bargaining one party or the other too often tries to gain an advantage - a bargain, like buying something in a store for less than it is worth.