Master P Sued -- No Money, Mo' Problems

A bunch of people who worked for Master P on his 2003 movie "Uncle P" claim the former rap mogul wasn't bout it, bout it when it came to pay day -- and now they want their cash ... more than $240k!!

According to court documents obtained by TMZ, several members of the crew sued P back in 2005 and WON -- but P never forked over the dough.

Now, the class has taken their case to the U.S. Bankruptcy Court in L.A. -- hoping they can finally squeeze some cash out of the man who was once reported to be worth $600 million.