It depends on the severity of "your cause". I don't think you will get many complaints if your cause is lower taxes or increase minimum wage. If your cause is to to take away rights of a coworker, you can't really stay neutral. I wouldn't accept my employer being neutral on gay marriage for example if I was a gay person.
As the culture war has become a bigger part of politics, like the grandfather comment suggest, more of these issues fall into that second bucket in which it is tough to accept neutrality.
As the culture war has become a bigger part of politics, like the grandfather comment suggest, more of these issues fall into that second bucket in which it is tough to accept neutrality.