That's incredibly vague. Does getting fired by your employer qualify? Employer going out of business from a competitor qualify?

Was the employer reckless? Was the problem preventable? Did they bring everyone else down with them? Is it something that can be prevented with regulation? Then yes.

And yet estimated levels of unemployment in the 19th century were never about 10%.

And again, I don't know what history you're referencing. You are entitled to your own opinions, but you are not entitled to your own facts. That being the case I'm finished arguing here. The last comment is yours.