ESR Leadership Team

Lester Rosen


Attorney Lester Rosen is the Founder of Employment Screening Resources® (ESR), a leading global background check firm located in the San Francisco, California-area. ESR is accredited by the Professional Background Screening Association (PBSA) – formerly known as the National Association of Professional Background Screeners (NAPBS) – and Rosen received the PBSA Lifetime Achievement Award in September 2019.

Rosen is a nationally recognized background check expert and the author of “The Safe Hiring Manual” (3rd Edition/2017), the first comprehensive guide to employment screening. He is a frequent presenter on safe hiring issues and his speaking appearances for “ESR Speaks” include numerous state and national conferences.

Rosen graduated UCLA with Phi Beta Kappa honors, and received a J.D. degree from the University of California at Davis School of Law, serving on the school Law Review. After practicing in the Orange County offices of Kindel & Anderson, a larger Southern California law firm, for three years with an emphasis in civil litigation and employment law, he joined the Riverside County District Attorneys office. His duties included career criminal and homicide prosecutions.

Rosen opened a private criminal law practice in Marin County in 1985. He specialized in criminal law and his practice has included federal crimes and death penalty cases. He holds the highest attorney rating of A.V. in Martindale-Hubbell. He has served as an adjunct professor of law teaching criminal law and procedure at Hastings College of the Law, and has served as faculty member and program chairman of the nationally recognized Hastings College of Trial Advocacy.

In 1996, Rosen joined with an established background and corporate security agency, the Doane Agency, to create a new firm in 1997, Employment Screening Resources® (ESR) – a division of a California Corporation – dedicated to promoting a safe and profitable workplace for both employers and employees. In 2003, that firm was rated as the top screening firm in the US in the first independent study of the industry in research report prepared by the Intellectual Capital Group, a division of

Rosen has qualified and testified in the California, Florida, and Arkansas Superior Court as an employment screening expert on issues surrounding safe hiring and due diligence. In 2000, he testified as an expert on background screening on behalf of the plaintiff in a case where the jury awarded 9.3 million dollars to the family of a doctor murdered by a carpet cleaner who was hired without any background investigation.

Rosen was the chairperson of the steering committee that founded the PBSA, a professional trade organization for the screening industry, in 2003. He was also elected to the first board of directors and served as the co-chair in 2004. As a background screening expert, he has been quoted by USA Today, Businessweek, Reuters, Christian Science Monitor, HR Magazine, and numerous newspapers, web sites, and trade journals across the United States.

He is also creator of a comprehensive Online Safe Hiring Certification Course, and narrator of the training video “Safe Hiring: How You Can Avoid Bad Hires” by Kantola Productions. He has written numerous articles and whitepapers on the subject of employment screening and selects the annual ESR Top Ten Background Check Trends.

Rosen has authored a module of the Global HR Practitioner Handbook Volume 3 published by Global Immersion Press titled “Criminal History Screening of Global Job Applicants: Hidden Dangers Employers Should Know.” He co-authored the ‘International Employment Background Checks’ module in the Global HR Practitioner Handbook Volume 2 from Global Immersion Press.

Rosen has also been active in working on legislation in California. In 2002, he worked with the California legislature to amend AB 655, a law that adversely affected employers in the area of reference checks and hiring in California.  He continues to be involved in California legislation affecting employers.  He can be emailed at [email protected].

NOTE: Mr. Rosen and Employment Screening Resources (ESR) do not provide or offer legal services or legal advice of any kind or nature. Any information on this web site is for educational purposes only.

The most selective companies trust ESR to manage their screening programs.

Employment Screening Resources® (ESR) is a global background check firm that is a strategic choice for employers who need accuracy and compliance in their background screening programs.

ESR is accredited by the Professional Background Screening Association (PBSA) – formerly the National Association of Professional Background Screeners (NAPBS) – and undergoes yearly SSAE 18 SOC 2® Type 2 audits to ensure the privacy, security, and confidentiality of consumer information.

ESR founder and CEO Attorney Lester Rosen wrote the book on background checks with “The Safe Hiring Manual.” Contact us today to learn more about our services and solutions.