I have worked in labor and management, public and private sectors, and I was briefly a member of Teamsters Local 249.
Unions are entirely appropriate in the private sector, in competitive industries. If a majority of the similarly-situated workers agree, a CBA is worthwhile. OTOH, in public utilities, government (particularly in education), health care and for delivery of essential public services (e.g., mass transit), the "right to strike" has no legitimate place.
It has long been known that in the public sector, the vital interests of the workers, on the one hand, go up against the convenience and comfort of "management," which might even benefit with a too-generous CBA. In the private sector a too-generous CBA might result in the company going bankrupt. The results of public-sector unionism are manifest around the country. Wages and benefits continue to ratchet up regardless of the state of the economy or the revenues coming into government, and Democrat administrations "give away the store," in order to ensure union support in coming elections. The result is public employees who have pay and benefits that exceed all but the most generous employers in the locality, and they have early and generous retirement plans that, in past years, bankrupted every private sector company that had comparable plans. And a compliant Press always downplays the poor retired government workers whose benefits are threatened, never mentioning that that poor worker retired at age 52.
Here in Pennsylvania, 5,000 State Liquor store workers are holding the entire state population hostage, as our intransigent Democrat governor refuses to privatize a perverse, inefficient, failing liquor sales system that dates back to the Prohibition. And the Media REFUSE to acknowledge the fact that the Governor is kissing the government workers' union's ass.
A college professor recently asked his "socialist" students if they would like to implement their chose philosophy in the classroom: He would give every student the same grade as the worst student in the class; they declined. This is what unionism is: every worker gets the same pay as the worst employee in the CBU. It doesn't have to be that way. Professional unions in Europe work hand-in-hand with management to make the companies more competitive and successful. Here the Unions' attitude is, "**** everybody else; we want everything we can get!"