If you wish to take it to court yourself, then they may also be able to provide you with or help you find an appropriate lawyer for the case.
Unions can have benefits sometimes, but handling issues related to harassment is not one.
> They will be able to represent you anonymously at first, and bring a collective action against the perpetrator if there have been multiple incidents against multiple victims.
Or, if the perpetrator is a peer but holds a position of power within the union, they may simply decide to ignore you, as HR did in this case.
If you speak out against the union rep's decision (such as by writing a blog post like this), and the union's charter has a clause prohibiting public opposition to the union (which is legal and very common), then you could get your membership terminated. This not only means you lose your current job, but you could effectively get blacklisted across the industry if there are no non-union shops. Unlike shared employer blacklists, which are illegal, this is perfectly legal because the union isn't sharing a blacklist - they just so happen to have a monopoly on hiring and also have the legal right to refuse you membership.
Ironically, it would be illegal for the company to fire you in this position, but unions have far fewer restrictions on whether or not they can deny or terminate membership, even in retaliation.
In theory. And disciplining or terminating employees who expose the company to well-documented, open-and-shut lawsuits is an HR bread and butter issue. Yet here we are.
If you really want someone who will be legally bound to represent you without conflict of interest, and with legal protection against retaliation, you want a lawyer, not a union rep. And you can do that with or without a union. (And employment attorneys already operate on contingency for most straightforward cases like these).
Are you based outside the US? Unions aren't particularly prevalent in the US, at least not in professional fields.