I've worked as a contractor at one of the largest tech companies in the US for over 2 years. My job was no different than my officially "badged" peers except that I was paid by another agency. Because of budget the company hasn't been able to convert contractors to official employees like before (they used to do a blanket conversion every other year).
When I left, my manager told me that I could say I worked for the company "because you ARE a ____ employee here as much as I am and deserve to say you are" and to put her down as a reference in job applications instead of HR.
I'd love to use the company's name to help boost my success in future job applications but wanted to know how detailed background/employee work history checks can be. In previous experience it's usually a 3rd party and they basically call the references I provided to prove I worked there--if they decide to check at all. Do they ever get more detailed than that?
Any advice on this would be appreciated.