There are a whole lot of benefits that a company can derive when they install the video surveillance system in their place of work. The way that I have been looking at this kind of thing is that it will improve the security level that is at the company, as long as the persons that are taking good control of it ain't doctoring some files on it.
Cases of some workers trying to steal from the company is one that won't exist anymore. Also, the manager can always watch such clips to see how the daily activities that are happening in the company is going. For me, it is going to be like the invisible eyes of the company that a lot of people that are working in the company will use. This is something that is quite easy for them to make use of as well to ensure high productivity.