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Experienced Investigation and Security Professionals

O’Brien & Associates is a full service, licensed, and insured private investigation and security agency founded in 1990 by Ed and Karin O’Brien. We have been involved in law enforcement for over 50 years. We currently employ 4 licensed investigators in the state of Wisconsin, with additional support staff, and have over 200 employees in all areas of investigations, security, loss prevention, and process service

With personal contacts in every major U.S. city, as well as in-house computer access to millions of databases, and a highly trained staff, we can provide the most efficient and effective results available anywhere.

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50 Plus Years of Experience

Providing Professional Service with Personal Integrity

Our licensed personnel and advisory staff offer over 50 years of experience in investigating criminal charges, civil complaints, insurance fraud, and various other financial crimes. We have been involved in parent-locator searches, skip tracing, asset/criminal history searches nationwide, and adoption locations guaranteed.

We Provided 200 of Security Personnel for Super Bowl 52 in Minneapolis, MN!

Do You Need Investigation or Security Help?

Our rates are extremely competitive, and we have built our reputation on competent, professional, cost effective service with timely results. We are also a member of National Association of Professional Process Servers (NAPPS).

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