Most of the cheating happens on the side of the insurance companies. Basically if you have an injury that is less obvious than a heavy weight mashing you flat in direct view of a supervisor, they will use every possible tactic to delay the claim. If you have an injury that doesn't show on an X ray, they will only pay when a court orders them to. Basically they have learned that if they can drag out payment with all the usual stalling tactics available, after a year, about a third of claimants just give up. They haven't gotten better, they just stopped wasting their energy on the insurance company.
When I destroyed my hands typing, that was the start of a long and tangled process. After improper handling by my superiors (failed to report, couldn't believe that typing could injure), the insurance company sent over an "occupational nurse" someone it seems whose only purpose was to encourage me to take steps that would render me inelegible for a claim. Got arguments like "Your wierd hobby that we know nothing about, is the cause" (I am a change ringer (see
http://www.nagcr.org ) Had to dredge up a british doctor who told them "his hobby likely delayed the onset". (they ignored the part, where I stopped doing it at first symptoms, and things continued to get worse).
It took 9 months in my case, before I saw a dime. During that time, the employer laid me off, (despite the outstanding claim) which induced further delays (luckily there was a case that said a layoff can be used as a hard "start of lost income" date, your state WILL vary). The tricks I learned to subsist on minimal cash have served me well in my current long term * economy underemployment...
Know anyone that needs a highly experienced Boston based software manager (project, or technical product management). Or shorter term, want a unique team building program, an alternative to the usual Outward Bound rope course?