@PJ Diaz
Only real concern I can see regarding Sole Traders is, they pay their taxes, but most importantly they pay for insurance, especially for liability.
Workers Compensation is paid for by your employer. Who has to pay workers comp as a Sole Trader, besides the Sole Trader?
What you're referencing are contracting scams. (completely different)
So in all honesty, if a Sole Trader has liability insurance and pays their tax accordingly, who tf are you to care anyway? If they injure themselves working, who tf are you to care anyway?
Also what does any of this shit have to do with the topic of this thread?