Crazy idea: Decentralized DAO platform on blockchain that essentially has an automatic union for all companies and all employees. Pick your company/union join get access to anonymized matrix chat, feeds, emails, meetings, etc... your id and employment status would be validated by verifiers, and you can organize without anybody knowing who you are if you want.

There could be optional dues, as well as some built in DeFi applications for investing in blockchain that could pay a dividend to the unions and their leaders.