Most white collar unions don't negotiate pay, other than maybe initial and minimum salary.
Edit: I must say I don't think most people here get it. Unions negotiate with employers. The idea that a tech union would agree with tech companies to set salaries is ridiculous. If that is what tech companies wanted they could have already done it. What white collar unions do is to negotiate for the things most people don't consider. They don't negotiate salaries, they negotiate that you should have salary review every e.g. year and some framework for that. That doesn't make a difference for those who already have that, but it does for everyone else. And that is how it is for every area. I don't know if there is a white collar collective agreement available in English online, but if there is one could just read that to get an idea.
Edit: I must say I don't think most people here get it. Unions negotiate with employers. The idea that a tech union would agree with tech companies to set salaries is ridiculous. If that is what tech companies wanted they could have already done it. What white collar unions do is to negotiate for the things most people don't consider. They don't negotiate salaries, they negotiate that you should have salary review every e.g. year and some framework for that. That doesn't make a difference for those who already have that, but it does for everyone else. And that is how it is for every area. I don't know if there is a white collar collective agreement available in English online, but if there is one could just read that to get an idea.
Edit2: I found one: "Collective Agreement between The Employers’ Association of the Swedish Banking Institutions and ~Swedish Confederation of Professional Associations" https://www.jusek.se/globalassets/pdf/avtal-privata/collecti...