The Hollywood star has been hit with a second lawsuit in as many weeks relating to his time working on his documentary I'm Still Here, which follows his brother-in-law Joaquin Phoenix's attempts to launch a rap career.
Cinematographer Magdalena Gorka filed suit on Friday (30Jul10) alleging Affleck's brother climbed into bed with her and groped her while she slept during a stay at Phoenix's New York apartment.
She also claims she was subjected to a hostile work environment and was left out of pocket and stripped of her production credit after she finally quit the project.
But a representative for Affleck has slammed Gorka's claims, telling TMZ.com, ""(It's) absolute fiction. (It's) fishy... (Gorka) hasn't worked for the movie since April 2009... it's interesting that she hasn't filed until now.""
The spokesperson also alleges it was Gorka who behaved badly during filming, adding, ""Several crew members have told us she was inappropriate on set.""
Gorka's lawsuit was filed just a week after Affleck was sued for $2 million (£1.3 million) by producer Amanda White, who claims the actor sexually harassed her during filming of the documentary.