Robert Michael Hoffman, a San Francisco plaintiff attorney jailed this month for allegedly sexually assaulting and beating several women, appears to run a bustling solo practice.

Attorneys who have worked opposite Hoffman say the sometimes intimidating litigator has focused on employment class action cases in recent years, along with his specialty in sex discrimination and harassment work. Court records show Hoffman or his firm, Hoffman Employment Lawyers, filed dozens of wrongful discharge and termination, employment, and fair labor standards actions against major corporations, including Federal Express, General Nutrition Corp., Wells Fargo Bank, and Red Robin International. He settled a class action against Warehouse Demo Services Inc. earlier this year for $3.3 million pending final court approval.