Interisk Limited is a full-service insurance litigation consulting firm led by James A. Robertson, CPCU, ARM, a widely known and respected expert in the property and casualty field.


Our experienced expert witnesses, backed by a professional litigation support team, can provide the assistance needed to successfully present your client’s insurance issues.

Our experts are qualified to testify in more than 25 states in both state and federal courts, and they have testified about:

  • Underwriting
  • Risk management
  • Insurance industry coverage interpretation
  • Agent or broker duties or standards of care
  • Claims handling standards
  • Long-tail coverage allocation
  • Self-insurance relationship to excess insurance
  • Captive insurer issues
  • Complex multi-insurer coverage and concurrency analysis


Whether your objective is a quick settlement or trying a major case, our extensive knowledge of the insurance industry allows you to prepare your case with confidence.

Interisk’s principal consultants have served as expert witnesses in more than 300 cases, making Interisk one of the most experienced insurance litigation consulting firms in the United States.


Interisk provides a variety of consulting services tailored to individual client needs. Common services include:

New cases are reviewed by the managing consultant who then assigns consultants based on experience and expertise. To achieve cost effective results, consultants are utilized on an “as needed” basis. With client approval, a second consultant may be assigned based on need or expertise.

There is ongoing peer review in all engagements to assure that work product meets the highest industry standards, supported by published references (where available).

Our goal is to provide the highest level of independent consulting in the most economical and timely manner.

With more than 20 years of experience working as a team, we’ve developed workflow systems and methods that allow us to provide both quality consulting and value.

Insurance research

An extensive research library, assembled by Interisk founder James Robertson, contains insurance industry publications dating back to the late 1800s. Sources include periodicals, textbooks, rating and forms manuals, and newsletters.

The library also contains underwriting manuals and guides produced by various insurance companies, policy forms promulgated by rating bureaus, non-bureau forms used by various carriers over the years, and articles culled from numerous insurance trade journals on litigation issues.

Read more about Interisk’s insurance research library here.

Please contact Interisk’s Case Manager and Research Director, Kathleen Wilson, for more information about specific materials or research fees.