[mattkrause]

A union might be part of the solution, but I doubt it can be all of it.

Collective bargaining could certainly help negotiate stipends and (lack of) benefits. Standardized degree requirements and access to funding could be agreed upon. Working conditions, especially related to non-research duties like teaching, could be on the table as well. These are certainly a source of misery for some PhD students in some fields.

However, I’m not seeing how a union could rein in an individual’s advisor, which is often the major source of stress. A union could certainly set working hours, but that will just move the debate to “expected productivity/quality per hour.” Moreover, a lot of things that are essential to building an academic career are technically optional. A union cannot force someone to write a positive recommendation letter, expand their scientific network, or anything like that.