Timothy G. Costello has been practicing labor and employment law since 1980. His practice emphasis is in the construction, hard goods manufacturing, food manufacturing, and distribution industries.

Tim is a contributing author to various publications on Wisconsin's Family and Medical Leave Law, OSHA and related safety issues, and co-author of Construction Labor and Employment Law for the Wisconsin Contractor, published by the Wisconsin Chapter of the Associated General Contractors of America, Inc.

He is a frequent presenter to employers and associations on federal and state discrimination law, OSHA and employee discipline and the law. As a member of Wisconsin Manufacturers & Commerce's Human Resources Steering Committee, Tim is also involved in several employment cases before the Wisconsin Supreme Court or its Courts of Appeals as amicus curiae and has testified before Joint Legislative Committees in Wisconsin concerning employment law reforms.