A drug trafficker and a convicted drug trafficker. The employer could not lawfully deny employment to the convicted drug trafficker without facing the prospect of LIRC ruling that drug trafficking isn't job-related. There is also no protection for employers against frivolous and meritless claims. We mustn't forget that this law applies to employers of one or more persons. Few small employers can risk spending months and years and fortunes on hearings and appeals proving their innocence.
People do bring such claims.
Two years ago I defended a staffing firm that places accountants. Her conviction discrimination case was ultimately dismissed. Of course no recourse exists for those employers, who had to spend time and expense defending those charges. In another case that I was involved in just this year, an individual convicted of forgery and who had misrepresented herself to the police by providing them with false identification sued a health care provider and a staffing agency when she was not placed in an accounting position. It was just recently dismissed after five months, but once again two employers had to undergo time and expense in defending a claim that never should have been brought.