Tamsen L. Leachman

Shareholder Portland (OR)

Tamsen is dedicated to assisting employers and organizations in all areas of employment and labor law. She represents employers in a wide range of employment lawsuits, administrative hearings, grievances, arbitrations, unfair labor practices, and in collective bargaining. She also provides advice and counsel to employers regarding the myriad of laws governing the employment relationship with an emphasis on prevention through compliance, coupled with the development of strategic, system-driven solutions.  Tamsen rounds out her practice with training programs for HR professionals, executives and in-house counsel.

Professional Activities and Speeches

Professional Activities:

  • SHRM
  • Portland Human Resource Management Association (Former President, Board Member, and General Counsel)


  • Sterling Education Services, Inc. (SES) - ''The Termination Process'' - Vancouver - October 30, 2014
  • American Bar Association - ''A Celebration of the 50th Anniversary of the Civil Rights Act of 1964'' - Portland - October 09, 2014
  • Xenium HR - ''Managing Attendance & Leave Laws'' - Tualatin - June 19, 2014
  • Ada County Employment Association (ACEA) - ''The Contentious Employee'' - Boise - May 13, 2014
  • Second Annual Conference of Language Access Coordinators National Center for State Courts (NCSC) - ''General Employment and Contract Law for Managers'' - Portland - April 29, 2014
  • Women's Law Caucus - University of Idaho - ''Pathway to Partnership & Working with the Business Community'' - Moscow - April 02, 2014


Published Works



Media Quotes

May 08, 2018 - Law360 - "Ogletree Deakins Snaps Up Employment Pro From Littler"