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Colin J. Tanner

(949) 250-5402
(949) 223-1180
Colin J. Tanner

Colin J. Tanner is a founding partner of the firm, Chair of the Labor & Employment Practice Group, Chair of the Personnel Committee, and Co-Chair of the Litigation Practice Group.  In these capacities, Mr. Tanner advises the firm’s clients regarding their labor and employment practices as well as defends and/or prosecutes litigation claims on their behalf.  He also practices in the areas of preventive liability, insurance coverage, and business litigation for the firm’s public and private sector clients.

Mr. Tanner was born in Oyster Bay, New York.  He received a B.A. in English & American Literature and Political Science from the University of California San Diego in 1987 and his J.D. from the University of California Hastings College of Law in 1990.  Mr. Tanner has been admitted to practice before all courts and administrative tribunals in California, as well as the United States District Courts for the Northern, Southern, Eastern and Central Districts of California.  He has also been admitted to practice in the State of Colorado.  Mr. Tanner is a member of the California State Bar, Colorado State Bar, American Bar Association, and Orange County Bar Association.

In 1990, Mr. Tanner joined the general litigation department of Haight, Brown & Bonesteel in Santa Monica after clerking with the firm during law school.  In 1993, Mr. Tanner joined the litigation group of Fainsbert, Mase & Snyder in West Los Angeles, eventually becoming Chair of the litigation and employment practice groups before relocating to Orange County in 1999.  In 1999, Mr. Tanner joined Hart, King & Coldren as senior counsel, continuing his litigation and employment practices.  In 2000, Mr. Tanner joined Burke, Williams & Sorensen as a contract partner in its Irvine office, eventually being invited to be a full equity partner, and participating in the firm's public law, labor & employment and business practice groups.  In 2003, Mr. Tanner became a founding partner in Aleshire & Wynder and undertook to Chair its Labor & Employment Practice Group.

Mr. Tanner has authored or co-authored articles which include: When is an Administrative Decision Final?; Peace Officer Retirement Identification Issues and the Related Endorsement to Carry a Concealed Weapon; CA Supreme Court Case Permits Use of  Pitchess Motions in Administrative Disciplinary Appeals;  Local Officials Must Participate in Sexual Harassment Prevention Training and Education; Diploma Mills: How to Prevent Employees from Buying Questionable Degrees; AB 119 Union Access to Employee Orientation; Minor Revisions to Public Records Act; DOL Changes CPI Index for LA-RIV-OC in 2018 with New Geographic Areas; New Employer Notice to Employees Requirement for Domestic Violence, Sexual Assault, and Stalking Time Off; CalPERS Agencies Must Limit Out-of-Class Appointments to 960 Hours per AB 1487; Supreme Court Rules In Janus v. AFSCME That Agency Fees Violate The First Amendment and SB 866 Is Signed Into Law In Response; Governor Signs SB 83 Extending Paid Family Leave Benefits; Governor Signs SB 188 Prohibiting Discrimination Based on One’s Natural Hair; Agreements In Employment Discrimination Cases; The Do’s and Don’ts of Retaining Independent Contractors; and Are Your District’s Independent Contractors Affected by AB 5 and AB 170?

Mr. Tanner is a regular presenter on labor and employment topics, including but not limited to:


  • Public Employer Labor Relations Association of California's 10th Annual Training Conference,  “The ‘California Rule’ Under Attack Still Stands – For Now”
  • 50th California Special Districts Association Annual Conference & Exhibitor Showcase, “Independent Contractor Do’s and Don’ts”


  • CALPELRA 2018 Annual Conference, “Navigating The CalPERS Administrative Appeals Process”
  • Public Employer Labor Relations Association of California's 9th Annual Training Conference, “Labor Relations 101”
  • Annual Chapter Conference of Northern California Chapter – International Public Management Association – Human Resources (NCCIPMA-HR), “Let the Grieving Process Begin -  Evaluating the Grievance Scope, Grievability, Timeliness, and Management Rights as Potential Defenses.”


  • Annual Chapter Conference of Northern California Chapter – International Public Management Association – Human Resources (NCCIPMA-HR), "When All Else Fails – Gearing Up for Imposition: Prerequisites, Techniques, and Approach."


  • National Public Employer Labor Relations Board (NPELRA) Labor Relations Academy I:   “The Foundation of Labor Relations
  • Public Employer Labor Relations Association of California's Training Conference, “Basic Principles And Practices Of Collective Bargaining And Tools Of The Trade.”
  • Public Employer Labor Relations Association of California's 7th Annual Training Conference, “Preparing for Negotiation.”