Because this guy is, in all probability, mentally ill. There's no evidence I can find of Chrysler actually speaking to prospective employers or lying about whatever employment history he has.
Here's (what he calls) the Oakland circuit court case judgement, an appeal of his original case: http://www.michbar.org/file/opinions/appeals/2003/120403/212...
To wit: he claimed that Chrysler lied about his employment history to a perspective employer, but the only perspective employer presented as evidence testified that she hadn't even contacted Chrysler about him.
Lacking literally any evidence of wrongdoing on Chrysler's part, the case was dismissed, and this appeals court upholds that dismissal.
He lists other "case numbers", most of which I can't turn up (no pacer access here), but I suspect it's just a litany of affirmations of the original judgement, or refusals to hear the case, or that they're simply filings of various sorts that never went anywhere. This simply looks like a persecution he is suffering in his mind.
I point it out not to be a grammar nazi, but to further a point: we all have different writing ability and/or attention to detail. The man made many more mistakes than you did, certainly, but I don't think it's necessarily a reflection of mental illness.
There's a lot of armchair mental health diagnoses in this thread, and I think they're a bit presumptuous.
http://www.npr.org/2015/12/10/459100751/utah-reduced-chronic...
How is that not the end of proof needed to a court?
Unless they are claiming he made a counterfeit badge which is silly.
There also have to be tax records on the state and federal side that a court can order them to retrieve?
The saddest part of that whole story is what I recognize as the descent into the mental state of homelessness, because once you are there, it's REALLY hard to dig yourself out to start thinking normally again. He's been at it since 1999, he's not coming back out whole, maybe ever. Story starts to have grammatical errors and paranoia at the end too, not good signs.