Catherine works on employment issues, both contentious and non-contentious and has specific expertise in complex multi-jurisdictional and High Court litigation (especially bonus and employee competition disputes), tribunal litigation, board level disputes and data protection. Catherine also guides employers through complex investigations, setting the strategy and working with other teams to ensure the best possible client outcome. Her practice is employer-focused, with a particular interest in the Financial Services and Technology sectors. She plays a leading role in the firm’s women’s network, is a practice group leader and sits on the firm's board.

Catherine is joint author of Employment Law Checklists (3rd Edition, published by OUP 2009) and is a contributing author to all three editions of Employee Competition (3rd Edition, published by OUP in 2016). In the latter publication, Catherine's contribution included co-writing the chapter on the international dimension of employment disputes and she was solely responsible for the chapter on pre-action tactics.

Chambers comments that Catherine "exemplifies the team's outlook, with a fun, responsive, creative approach". She is also described by clients as "highly accessible and always prompt", while peers commend her as a "rigorous, hard-fighting" opponent in litigation. Legal 500 comments that Catherine Taylor is "very accessible" and her business acumen brings clients "added value".