Colby Treasure

Colby specialises in public liability, employers’ liability, workers compensation, and compulsory third party matters. He also has extensive experience advising on sensitive complex claims.

Since his admission in 2008, Colby has practised solely in insurance law. He advises a diverse range of clients, including major insurers, underwriters, and self-insured corporations.

With an extensive knowledge of the Workers’ Compensation and Injury Management Act 1981, Colby represents his clients across the full scope of workers compensation and liability claims. He also provides advice to employers following serious workplace incidents and defends corporates in workplace health and safety prosecutions.

has experience representing his clients in the Supreme Court, District Court, and the WorkCover Conciliation and Arbitration Service.

‘From the outset I partner with my clients to develop an effective claims management strategy. I encourage them to explore ways to resolve a claim at the earliest stage possible to ensure the amount of litigation is reduced, and the costs are minimised.’

Colby’s approach is hands-on and client-focused, earning him a reputation as a trusted advisor. He remains actively involved throughout the entire claims process, from initial advice through to negotiated resolution or arbitration and trial. Leveraging his knowledge of legislation, regulations, and procedural rules, Colby applies the most effective strategies to help insureds and insurers resolve disputes in a timely and cost-efficient manner.

Industry recognition

• Doyles Guide - Preeminent Public & Product Liability Lawyer (Defendant), WA in 2021 and 2024, Leading in 2025, Recommended in 2020
• Doyles Guide - Leading Compulsory Third Party Insurance Lawyer (Defendant), WA in 2019 and 2020, Recommended from 2021 to 2024
• Doyles Guide - Recommended Workers Compensation Lawyer (Defendant), WA in 2019 and 2022, Leading in 2020, 2021 and 2023, Preeminent in 2024 and 2025
• The Best Lawyers in Australia - Insurance Law, Perth since 2021