Unions long ago outlived their function. Today’s labor laws already do everything unions were first organized to do ... safer work conditions, fair wages, maximum work hours, over time ...they especially have no place in the public employee realm.
While I admit I am out of touch with unions in the workplace and was speaking of long time ago experiences, I do know that labor laws are pretty much in effect. But one thing that unions still are relevant is providing workers with legal representation as part of their dues. Again not sure of how beneficial that is but to know that an employee won't have out of pocket expenses when dealing with grievances, does matter no matter the case. Other than legal representation, I admit don't know what significant value unions bring, especially with so much technology and less manual labor out there.
I also am very much aware of the prolific misuse of funds/power of union leaders especially in the realm of politics representing themselves vs workers. Also I know unions are a major reason (i.e. wages/benefits) of jobs shifting out of the Country. Be interesting to see those worksites compared with American ones. Unions have been effective in getting employees better benefits (e.g. healthcare, retirements, paid time off, etc.), but again that perspective is from my aged lens.
Anyway I still think they have value (albeit diminished), and this is from someone who was in management all of his working career.