Licensed to practice law in both Pennsylvania and New Jersey, the Zeff Law Firm specializes in employment law. A graduate of the Delaware Law School of Widener University, Gregg Zeff began practicing law in 1988. Over more than thirty years in practice, he has earned a reputation as an experienced and aggressive lawyer. For all cases they handle, Zeff lawyers will evaluate cases and explain legal options to victims and their families.

Employment law includes cases of descrimination (based on race, religion, nationality, gender, or age), harassment, wrongful termination, retaliation, and hostile work environments. Zeff lawyers also advocate for First Amendment rights, whistleblower rights, and FMLA violations, and labor relations disputes. Other cases handled include disputes with severance agreements and partnership disputes. 

Other areas of practice for the Zeff Law Firm  include cases of police brutality, sexual abuse, school bullying, and civi rights violations. The firm's lawyers represent victims of police brutality, such as individuals whose rights have been violated by a law enforcement officer's failure to follow proper procedure. Zeff represents individuals who have been the victim of sexual abuse at a schools, religious institutions, and other organizations. Zeff also represents students who have been bullied, including cases of physical violence, intimidation, verbal threats, and cyberbullying. Zeff's lawyers are also experienced in federal and state civil rights laws, and will advocate for their clients when their civil rights have been violated.