I think that's an interesting discussion worth having -- supposing a tech union existed, what would we want it to negotiate for?

Some possibilities I can think of are: better pay, less work hours or paid overtime, better benefits, more vacation time, minimum office size / screen size / cubicle wall height, a cap on the ratio of employee pay to CEO pay, a right to say no to work that violates a professional code of conduct without risk of reprisal, access to training material, pay transparency, prohibitions against overly-broad intellectual property assignments and a right to work on non-competing projects in one's free time, prohibitions against anti-compete clauses, and mandatory prior notification of layoffs.

I imagine most people who work in tech would have a different list, but there would be some overlap.