Pros
I like the campus of WB. It's nice and quiet. The people are friendly. You have access to amazing TV shows and movies filming there. The WB gym is also quite nice though I wish it was open on weekends.
Cons
I've worked on and off for WB for about 5 years. I worked for different productions throughout as a PA of some kind, mostly in the office. Office politics aside -- When I started, PAs and other below the line employees were considered staff of WB. That meant we could get 401K's with a match, health insurance options and more. It was really awesome to work somewhere with benefits. However, at the time (2015 or so) I was making about $11/hr before overtime and it was extremely hard to live off of in LA. I always worked 60hrs a week but even with overtime it's just not affordable. When minimum wage rose over the last few years, a major change was made. (Also I think the unionizing of Writers Assts may have played a factor). WB made all PA's and other assistants "contract employees" so we were no longer offered health insurance, 401Ks or vacation days. At the end of a season, we'd all get a vacation/sick day pay out for our unused days --- NO MORE. It is already hard enough to live off a PA salary in LA, and to then take away the benefits that made it slightly more possible really felt like a kick in the teeth. I no longer felt like a valued member of the WB community. Also, the HR department is only there for the company, not to support you. Any time I gave them frank advice or complaints, their responses were less than satisfactory.