Insurance Defense

A fair and equitable decision concerning the distribution of Workers Compensation benefits cannot be made without the proper investigative information. A prompt and thorough investigation can yield the truth about a claimant's allegation, justifying the full payment of a valid claim or saving thousands of dollars on fraudulent claims.

Using your requested User ID and Password, NBI's veteran corporate investigators and secure online case tracking system allows you access to your internal investigation data such as reports, statements, activity, billing information, photographs and video, right from your office computer.


A thorough AOE/COE investigation is an essential factor in properly evaluating a workplace injury. We pursue the possibility of Subrogation whenever applicable and list any contribution factors involved. We tailor our investigations to meet your needs, whether it is a full AOE/COE, the claimant's statement only, or supervisor, co-worker and witness statements. Obtaining a signed medical release from the claimant and copies of their personnel file is a standard procedure and your office will be provided with regular updates as to our handling. We maintain an awareness of dates to Accept/Deny and will always complete our handling of matters with a report and attachments to your office within 30 days or less.


Approached as a multi-step process, we gather intelligence on the claimant by equating their age, family dynamics, profession and employment history, and studying the general layout of the claimant's neighborhood and surrounding area. Although it is a welcomed element, Subrosa is not about being lucky. It is about knowing your subject and having a plan of action. In gathering video evidence, we remain mindful of the thrust of our investigation and identify and obtain whatever evidence is available to be used in adjudication. NBI has a reputation for excellence in the acquisition of video in both content and quality. Claimant video will be provided to you in standard VHS, Compact Disc or DVD format based on your preference.


During our initial investigation, NBI attempts to ascertain whether the possibility of third party liability exists. When a liable third party is identified, information is collected on their business structure and liability carrier. We offer a complete business intelligence analysis based on service and product defect history to be utilized as evidence in pursuing compensation outside of litigation or at trial.

Security Services

MPS Security, a division of National Business Investigations, Inc. (NBI), is a full-service security firm currently licensed in California, Colorado, Washington, Arizona, Nevada, Texas and Florida focused on physical and asset security using Uniformed Security Officers and Plain Clothes Executive Protection Agents for site security, events, residential and commercial properties, access control, security patrols, loss prevention, fraud detection and undercover officers.

MPS Security specializes in providing high-end security services such as Hostile Termination Protection, Reduction in Workforce Security, Labor Union Unrest and Strike Security, Asset Protection, Personal Protection, Estate Security, Corporate Event Security, and Risk and Threat Management Services throughout the US.

We focus on client outcomes by providing professional Uniformed Security Officers and Plain Clothes Executive Protection Agents that enhance security and safety at residential, retail and workplace environments.  Our trained staff and officers focus on your needs to provide a custom security plan.  We will staff your location with officers and agents that understand the unique nature of your security concerns and vulnerabilities in your home and work environment.  Let us show you how MPS Security can make a difference for you.

MPS Security Areas of Operation

MPS Security provides Uniformed Security in four Western States (California, Arizona, Nevada, Washington), Texas, Colorado and Florida, however through our strategic partnerships we can provide services throughout the United States.  MPS Security also operates internationally for particular services and support.

Though our main operational is based in Southern California and operate heavily in San Diego County, Riverside County, Orange County, Los Angeles County and San Bernardino County, MPS Security maintains uniformed security and executive protection operations in multiple states.  Our corporate headquarters is located in Murrieta, California.  The Murrieta / Temecula area is a growing business and industrial hub of Southern California and allows MPS Security to effectively offer uniformed security coverage to the Southwest Region of the United States for Guard Services, Uniformed Security Officers, Security Guards, Armed Security, Unarmed Security, Site Security and Event Security.

Contact  866-678-4408