The family of a Facebook employee who died by suicide about a week ago at the social media site’s California headquarters has retained employment class action firm Sanford Heisler & Sharp.

Qin Chen, an employee of Facebook, jumped from the upper floor of the company’s headquarters in Menlo Park, California, on Sept. 19. Last week, protesters demanded “Justice for Qin,” some insisting that he might have been a victim of bullying at Facebook.