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Jonathan Welner

Employment and labor Attorney at San Francisco, CA

Not yet reviewed

also known as Jon Welner

  • Licensed for 28 years
    State CA
    Acquired 1995
    Active No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Jonathan

Learn Jonathan’s areas of practice.

Practice areas
  1. Employment and labor
    Represent and counsel manufacturers and developers on prevailing wage law. Defend clients against prevailing wage claims and advise on minimizing exposure to prevailing wage requirements.

    22 years, 30 cases

  2. Environmental and natural resources
    Represent and counsel manufacturers and developers in all areas of environmental law, including the regulation of air emissions; water quality; hazardous and toxic substances; hazardous waste; radioactive materials; laboratories and biotechnology; industrial facilities; energy companies; and public utilities. Represent real estate developers in the cleanup and development of contaminated property, or Brownfields. Special expertise in the redevelopment of former military facilities.

    29 years, 100 cases

Jon Welner is a leading practitioner of environmental and natural resource law in California. Jon represents clients in all areas of environmental, natural resource, and land use law. His practice includes the regulation of air, water, hazardous substances, hazardous waste, radiological materials, development of contaminated properties (“Brownfields”), energy and water companies, coastal development, endangered species and other natural resources, as well as matters involving CEQA and NEPA (environmental impact reports/studies), the Williamson Act (farmland preservation), and Prop 65. He has special expertise in conducting legal audits and developing compliance systems, and in the early transfer and redevelopment of former military bases. Jon is frequently called upon by the media to comment on environmental and natural resource topics.

Jon is also the Chair of the Firm's Prevailing Wage Practice Group. He is recognized as one of the foremost practitioners in the State, and is frequently involved in complex and groundbreaking cases on behalf of developers, contractors, and manufacturers. Jon has been featured in the California Lawyer as one of top prevailing wage lawyers in the State.

Jon represents clients in both administrative and judicial proceedings, including proceedings before California Air Districts, the State and Regional Water Boards, the California Department of Toxic Substances Control, the California Department of Public Health, the California Department of Conservation,the California Public Utilities Commission, the California Energy Commission, the Coastal Commission, the San Francisco Bay Area Conservation and Development Commission (BCDC), the State Lands Commission, the California Department of Industrial Relations, U.S. EPA, the U.S. Army Corps of Engineers, the U.S. Nuclear Regulatory Commission, the U.S. Department of Labor, local governments, and other agencies. He has previously served as a senior official at the California Natural Resources Agency.

Jon's clients include project developers, land owners, renewable energy companies, hospitality companies, water utilities, automobile manufacturers, chemical manufacturers, biotechnology companies, modular building manufacturers, scrap metal recyclers, hazardous waste and solid waste landfills, local governments, and nonprofit organizations.

Jon is a Councilmember of the Town of Tiburon, California. Prior to becoming a Councilmember, he served for six years on the Town’s Planning Commission. He also previously served as a senior official at the California Natural Resources Agency.

Jon is a Board Member of MCE Clean Energy, a local government agency (Community Choice Aggregator, or CCA) providing renewable electricity to Bay Area communities.


44 Montgomery Street
36th Floor
San Francisco, CA, 94104

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AVVO RATING 10.0 (Superb)

Work Experience

  • Member
  • Mintz Levin Cohn Ferris Glovsky & Popeo, PC
  • 2018 - Present
  • Partner
  • Jeffer Mangels Butler & Mitchell LLP
  • 2012 - 2018
  • Partner
  • Downey Brand LLP
  • 2010 - 2012
  • Of Counsel
  • Paul Hastings Janofksy & Walker, LLP
  • 2002 - 2010
  • Consultant
  • McKinsey & Company
  • 2000 - 2002
  • Attorney
  • Beveridge & Diamond, PC
  • 1996 - 1999
  • Clerk
  • U.S. District Court (N.D. Cal.)
  • 1995 - 1996
View all work experience


  • Stanford Univ Law School
  • J.D.
  • 1995
  • Stanford Univ
  • A.B.
  • 1989

Sample of Legal Cases

  • Prevailing wage lawsuit
  • Very favorable settlement
  • McClellan Air Force Base "Early Transfer"
  • Successful transfer


  • State Bar of California, Environmental Law Section
  • Executive Committee Member
  • 2014 - Present
  • Planning Commission, Town of Tiburon
  • Member and former Chair
  • 2012 - Present
  • Bar Association of San Francisco, Environmental Law Section
  • Executive Committee Member and former Chair
  • 2010 - Present

Languages Spoken

  • English
  • Hebrew

Honors and Awards

  • Best Lawyers in America, Environmental Litigation
  • Best Lawyers in America
  • 2017
  • Northern California Super Lawyer
  • Super Lawyers
  • 2017
  • Best Lawyers in America, Environmental Litigation
  • Best Lawyers in America
  • 2016
  • Martindale-Hubbell Peer Review, AV Preeminent, 5.0 out of 5.0
  • Martindale-Hubbell
  • 2013
  • Associate Editor
  • Stanford Law Review
  • 1993
  • John Gardner Fellowship
  • Stanford University
  • 1989
  • Member
  • Phi Beta Kappa
  • 1988
  • Harry S. Truman Scholarship
  • Harry S. Truman Scholarship Foundation
  • 1987
View all awards

Speaking Engagements

  • Prevailing Wage in California (San Francisco)
  • Prevailing Wage in California
  • 2014
  • Prevailing Wage in California (San Jose)
  • Prevailing Wage in California
  • 2011
  • Prevailing Wage in California (Oakland)
  • Prevailing Wage in California
  • 2011
  • Prevailing Wage in California (Monterey)
  • Prevailing Wage in California
  • 2011
View all speaking engagements

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San Francisco Employment and labor Lawyer Jonathan Welner
Jonathan Welner
Employment and labor Attorney
San Francisco, CA
Licensed for 28 years