“Fair negotiations” are like real estate deals or company merger, with a “free and willing seller” and a “free and willing buyer.” “Free” means free to go to a different buyer or seller. This implies competition on both sides. “Willing” means willing to accept this deal, another or none.
Price fixing, monopoly or cartel is not fair negotiation because one side (or both) isn’t “free.” A strike or a lockout that can’t be bypassed isn’t “free.”
A worker vs. a company is “fair” as long as each is free and willing. If one side can “demand” or punish the other, who is not free to go elsewhere, then it is extortion.
A union vs. a company can be a fair negotiation if both are truly free. But if the union is in fact a large monopoly or the company can control all potential workers then it is not. The last union strike against Boeing was extortion. Damage to Boeing was maximized, and the union could control all potential aircraft workers as well as other sympathetic unions.
A contract between a government and a union on money matters is not called negotiation but rather is called “bargaining.” It includes both extortion and bribery. The bribery is money from the union for “contributions” and other help to government politicians to get them elected. The politicians then give sweetheart pay and benefit bribes to the union. The extortion includes both bribery and punishment of politicians to enforce the union agenda.