Well, if their job is unethical to me, chances are the other person doesn't have the same values as I do. Although a relationship can work even though the partners have different values, I've found that the most successful relationships had both partners sharing the same kind of values and ethics.

Personally, I would not date someone if their job was unethical to me. I have in the past, and I can guarantee, at least to myself, that it's not going to work out.

Elaborate on 'unethical' by perhaps providing examples?

I would have thought that would be rare to happen to date those types in the first place.

Of course, that seems unethical to me too, but it seems unlikely by chance that I would date them, and it would be by-default to terminate the date in that unlikely scenario.

in this category an unethical job pretty much means illegal ways to get money i can't see another way around it.

I don't think I would be attracted to the personality of the person who takes the job I believe is unethical.

I dislike extremes, so anyone who takes a violent job, or has an extreme religious calling I would be disinterested in.

Though if I met someone who I thoroughly enjoyed, but found out that the job was something I disliked I would probably talk to them about it. (For example, if I was dating a plastic surgeon who also performed vaginal lasoplasty on women for aesthetic reasons, I would probably try to convince them to not offer those services.)