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Attorney Details

John E. McOsker

John E. McOsker

Partner - Los Angeles

213.236.0600 t
213.236.2825 d
213.236.2700 f

email jmcosker@bwslaw.com
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John McOsker has been a complex business litigator since he joined the State Bar of California in 1993.  Throughout his career he has served in various roles for the firms with which he was affiliated including managing partner, litigation group chair, business litigation subcommittee chair and management advisory board.

Upon graduation from law school and admission to the bar, John’s practice has been focused on business litigation in the healthcare, retail, environmental/mass tort, manufacturing, insurance, and aviation sectors.  Specifically, John has successfully litigated partnership disputes, directors and officers/fiduciary duty claims, mass tort/environmental matters, insurance coverage, insurance bad faith, and accounting fraud, among others.  John has defended companies in various forms of administrative hearings, investigations, agency enforcement actions, and adversarial proceedings, including the Federal Aviation Administration, the Small Business Administration, the United States Department of Labor, the National Labor Relations Board, the California Attorney General, and the Equal Employment Opportunities Commission, as well as in state and federal courts across the state and country.  In addition, John expanded his practice to include advising companies on matters of regulatory compliance at the federal, state and local level.  John continues to advise companies in a wide range of industries as to their business operations as well as defending complex business litigation.

John’s entire legal career has been spent in and around Los Angeles and he has volunteered his time and expertise to the local community.  He was appointed by Mayor James K. Hahn to serve on the Harbor Area Planning Commission and did so from 2001-2006.  He served as the Commission’s President from 2002-2006.  In addition to his service on the Area Planning Commission, he was appointed to membership on the Port Community Advisory Committee.  He has volunteered as a member of the Board of Managers of the San Pedro Peninsula YMCA since 2005 and has been a legal volunteer for the St. Lawrence Brindisi/Watts Youth Center since 1995.  John is a founding Board Member of LA Fleet Week, a non-profit established to annually host the United States Navy for fleet activities in the Los Angeles Harbor beginning 2016.