As the Cartel Turns
Hometown paper the LA Times runs an extensive piece on the complete screw-over that studios give to writers. To say that they lie, cheat, and defraud doesn't begin to cover it.
In this case the victim is one Deborah Gregory and the villain is Disney but the same story could be told hundreds of times - just change the names and it's the same again and again. In this case Gregory started as a successful but naive author, then signed with Disney for 4% of net. After two movies, millions of CD and DVD sales, and god-knows-how-much spin-off merchandising, Gregory has gotten exactly nothing for any of this. In fact, Disney won't even give her statements showing revenue and expenses that would allow her to pursue her share of the profits.
As the Times piece points out Hollywood has been using shady accounting and unfair contract terms to screw people for decades. They have all the power, especially when dealing with newcomers, and they use it shamelessly. Keep that in mind the next time they cry about how much money they're losing to "piracy"; I'm not a big fan of theft, but I sure do love schadenfreude.