Campbell joins Aitken from Brisbane firm Quinlan Miller Treston, where he was the managing partner and head of the workplace relations practice. He has extensive knowledge and experience in both federal and state employment and workplace relations issues and has represented clients in numerous forums, including the Australian Industrial Relations Commission, the Anti-Discrimination of Queensland and the Federal Court.

Vaughan, who was admitted to practice in December last year, previously worked as an industrial advocate for the Queensland Public Sector Union, where he gained experience in a range of workplace relations issues.