(602) 631-6790

Welcome to Onsager, Werner & Oberg P.L.C.

The attorneys at this firm are pleased to offer years of specialized training and experience in multiple facets of the law.

Our quality service and extensive background are two of the many reasons we have been honored and recognized by the following:

  • Best Lawyers of America
  • Arizona's Finest Lawyers
  • Southwest Super Lawyers

Best Lawyers - Best Law Firms - Tax Law - 2018

Best Lawyers - Best Law Firms - Tax Law - 2018

Richard Onsager - Lawyer of the Year

Robert Werner - Lawyer of the Year

Listed in US News best law firms in both Tax and ERISA. Click here to find out more.


Estate Planning & Administration
  • Estate Planning
  • Living Trusts and Wills
  • Irrevocable Trusts
  • Charitable Trusts
  • Family LLCs and partnerships
  • Probate and Estate Administration
Business & Corporate Law
  • Tax Planning
  • Corporate Tax
  • Partnership Tax
  • Real Estate Tax
  • Partnerships & LLCs
  • Nonprofit Organizations
Employee Benefits (ERISA) Law
  • Tax Qualified Retirement Plans
  • IRS/DOL Audits
  • Executive Compensation Plans
  • Welfare Benefit Plans
  • Cafeteria Plans
  • Deferred Compensation Plans