Unless you like working for free and regularly being asked to commit fraud/launder money, not many upsides...
Svantaggi
You will never receive compensation for any work performed after your “hire” date. You will have your employment contract breached almost immediately, while management breaks about a dozen state and federal labor laws per month; currently under investigation by 3 state and local regulators/law enforcement agencies. Fair warning if they are still in business a month from now: avoid this company at all costs!