Tiger Woods allowed his restaurant to overserve booze to a staffer who struggled with substance abuse, which led to his drunk driving death ... this according to a new lawsuit obtained by TMZ Sports.
The parents of Nicholas Immesberger have filed the lawsuit -- claiming Nicholas had worked as a bartender at Tiger's The Woods restaurant in Jupiter, Florida ... and knew Tiger personally.
In fact, Immesberger's parents say he was recruited to the restaurant by general manager Erica Herman, who is also Tiger's girlfriend.