Pros
Consistent, reliable hours. Clear job expectations. Quick support from superiors when needed (at least on the Amazon campus, where I worked), The majority of the guards were at least moderately competent (the number who weren't was offset by the excellent ones).
Cons
Short staffed at times. Sometimes you have to wait a long time for your relief to arrive. But that's just minor stuff. My big issue: Securitas Human Resources openly lied to me. Amazon decided that they no longer wanted desks in lobbies, and that it looked "more professional" to have a guard standing at a podium for eight hours. I had a bad hip, and an accomodation letter from my Doctor saying so. So a number of us guards who were disabled were taken off the Amazon Campus, and assured us that they would find us work on another site. The Union contract required them to provide three possible positions...and that's exactly what they did. They offered me my choice of three different guard posts at three different client locations...all three of which were impossible for me to perform physically. The person I worked with in Human Resources had lead me to believe that she would continue searching for a match for me, and trusting her, I waited. One day, a couple months later, I called the Employee Service Call Center with some questions about my file, and they let slip that my account in the computer was coded "T". They immediately tried to gloss over that revelation, changing the subject and trying to shift my attention. But I insisted they tell me what the "T" stood for. Finally they relented, and admitted it stood for "Terminated". They had fired me, and not even bothered to inform me by email or mail! I was excellent at customer service, and popular with the clients, but because my disabled status limited the duties I could perform, they found a way to get rid of me. When Securitas says "Human Resources" they mean that human beings are just another natural resource to be used and discarded.