I think you might misunderstand the goal of a union. It's inherently political, that's the whole point of it. And the values from the mission statement does sound like something every company should aim for, but sometimes they forget we're all humans here, so we need something to keep companies in check.
I'm not sure comparing unions to code of conducts are suitable. Unions are a historically old and proven way for workers to enact change in workplaces, industries and even entire countries. Code of conducts in open source is a fairly new invention (officially, written down ones at least) with no such track record.
I'm not sure comparing unions to code of conducts are suitable. Unions are a historically old and proven way for workers to enact change in workplaces, industries and even entire countries. Code of conducts in open source is a fairly new invention (officially, written down ones at least) with no such track record.