The Firm

Celebrating 56 years.

Parker & Irwin, has been a leading innovator of Workers' Compensation Defense since 1964. 

The imaginative defense strategy of Parker & Irwin led to the landmark decision in Aetna Casualty Company v. WCAB (Coltharp). The firm also had an integral role in the Supreme Court rulings in Santa Rosa Junior College v. WCAB (Smythe), Nicky Blair’s Restaurant v. WCAB (Macias), The Travelers Insurance Company v. Sierra Pacific Airlines, and Bray v. WCAB, ITT Barton. In the largest lawsuit of its kind in California, Parker & Irwin had an active role in the massive Big Rock Mesa Landslide litigation.


We utilize technology to provide clients with timely, cost effective professional legal services. Because many of our clients require paperless communication, we have invested in applications and equipment in order to be on the “cutting edge” for these requirements. We were included in the initial selection of law firms to participate in the EAMS trials in 2008, which is a totally paperless environment with the Workers’ Compensation Appeals Board. Client Profiles, a case management application, is used by our attorneys and staff to record and monitor all activities on a case. A full history of each case handled, from inception to closure, is available for an immediate response to client inquiries whether the attorney is in the office or at a remote location.


Our cloud based case management and billing application, Meruscase, enables our attorneys to have case file information at their fingertips in a secure and HIPPA compliant manner.  Our system complies with our clients’ electronic billing programs and integrates UTMBS code sets. LexisNexis CounselLink, Allegient Systems, Bottomline Technologies, Advocator System, LegalBill, Legal Precision are examples of currently implemented programs.

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John F. Parker, Robert L. Dally, Ross C. Irwin

Photograph taken 1990

All inducted into the CAAA Inland Empire Hall of Fame for their excellence in the field of workers' compensation.

Our legal services are billed in 1/10th hourly increments and there is no mark-up in costs advanced.  
Our policies and procedures are based upon efficiency and cost effectiveness. Regular staff meetings are conducted for educational, informational and “brain storming” purposes. Our objectives are that our attorneys and staff are well informed, trained and have the best tools available to produce a product that represents the client’s best interests and the firm’s goals. 

© 1964 - 2020 by the Law Offices of Parker & Irwin, a Professional Corporation, Established in 1964 - All Rights Reserved.

This web site is designed for general information only. The information presented at this site should not be construed to be formal legal advice nor the formation of a lawyer/client relationship. Persons accessing this site are encouraged to seek independent counsel for advice regarding their individual legal issues.