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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.
Services
O'Brien & Associates is a licensed and insured private investigation agency specializing in the prevention and detection of fraud in government entitlement programs. We can keep our contracted costs lower in verification and investigation activities due to our expanded service area, extensive network database, and shared cost integration.
If you have any questions about the services we can provide for you, i.e. contracting for direct service, service of process, or security for a special event, please feel free to contact us at 800-225-9947. We will be glad to meet with you at your convenience to discuss the various services we can provide.
When it comes to controlling retail loss, protection means detection. At O'Brien & Associates, we offer plain-clothed loss prevention agents that are trained to identify and prevent loss within a multitude of areas that occur in the retail setting. With focus and determination, our loss prevention agents are continuously educated on current and future trends involving retail loss.
Reviews (8)
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Tay Lutz
Jun 23, 2022
I really enjoyed working for this company. They have very flexible scheduling and were able to work with me on when I am able to work. They also have a very flexible work load and I felt very independent with this job
Dakota Garthus
Jun 20, 2022
While working for O'Brien's I've built some trusting relationships and support from my higher ups. I've been provided with really helpful training and it's honestly been such a breath of fresh air working with people who understand my needs as an employee.
Dawson John
Apr 17, 2022
They lack communication there's no job security one wrong move you're out the door there's no disciplinary action whatsoever the owner "Ed O'Brien" feels the need to always assert his dominance to his employees, every week there's a new rule, they don't offer health insurance benefits or PTO ALL IN ALL WOULD NOT RECOMMEND THIS COMPANY SAVE YOURSELF THE TROUBLE!
Abas Omar
Feb 14, 2022
Don't work for this company. They will keep your money, also they will promise you something and they will not follow through. The owner makes policies pretty much every other day. It's the worst company to work for. I can't say any positive thing about this company
Jenni Talia
Dec 22, 2021
DISCLAIMER: Just my opinion. Don't @ me Edwardo Fun Job. Horrible owners. Corporate office is a circus ran by clowns. Get assaulted on the job and Eddy boy will send you thoughts and prayers. Criticize Eddo and the egomaniac will probably go nuclear and all of a sudden have more than enough money to try to get both the cops and lawyers involved. The owner likes to assert his dominance on his workers to make sure they know he's the Alpha Male and that he has the biggest third leg.

Pretty soon, Edward's clown boots and his circus will run out of flavor and Koolaid for his minions. (You know who you are). Oh, one more thing. This guy (Edison, the owner) really gave his own company 5 stars LOL
Jack Meoff
Nov 07, 2021
Critical: Professionalism, Quality Never work for this company. Menards pays them a lot but they don't pay their LPs enough. This is the WORST security company ever. DO NOT APPLY!
Kimberly Ming
Oct 08, 2021
I understand why they need workers now. Why would anyone want to work for them? Very unprofessional. They don't let you know the rules of the job but expect you to know them, then trouble you about them. They communicate through text rather than being a professional and communicating there issues in person. How do you expect issues to be resolved if you can't address them properly?

This company needs new management. Especially the EC district; husband and wife managing? No wonder they get to do anything they want and write everyone else up for doing what they allow themselves to do. Maybe Menards should hire a different security company.
Nicholas Brown
Feb 29, 2020
Don't work here, you'll regret it. They hire people with 0 experience, ride you hard while making sure you know you're worthless. They'll lie to you and screw you out of money. There is not one nice thing I can say about working for this company.