I think unions would work best as a replacement for the "good" (to workers) part of "HR". For any unionized category/shop there should be a grouping of unions

I think unions would work best as a replacement for the "good" (to workers) part of "HR". For any unionized category/shop there should be a grouping of unions (adding a new union to that group should require a simple majority among a voting quorum of all active employees) which could thus collectively bargain between a large business and/or group of businesses and the workers that make that possible. I also like the idea that unions on strike (in this case, groups of them; they'd agree to go out on strike together and vote together for it) don't disrupt business, but rather nullify profits. Maybe they agree that during "strikes" all compensation gets divided by charity/etc. This goes for the workers AND the businesses; both of whom still have to pay normal costs. -- edit -- I forgot one other critical feature. Just like employees might take an employee though any of the unions, so to can the employee switch unions (I assume seniority and compensation offers would be favorable to prompt such a switch.)