Why does this look horribly wrong to me. Why does a union need a fundraiser? Shouldn't they have hold tight belt and have significant war chest for this? Or take extra fees from the new members?
It does feel wrong because in our society having access to more financial resources often translates to better representation in the courtroom. This is similar to how donating to organizations like the EFF can provide more justice to those who are not multibillion-dollar corporations.
(Employment Tribunal, but yes.) If even half the stuff in the posting is true, it should be an easy win. Unfortunately Legal Aid for Employment Tribunals has been cut to the bone, but their union should be able to help here by taking the case up on their behalf.