Pros
Great company...to invest. Just don't take their advice or investment "education". Chances are the rep you're speaking with is probably a recent college grad with little to know investment knowledge and is just reading off a script provided to them by Vanguard.
Cons
Call-center environment, micro-managers, required to participate in "voluntary" United Way activities, given movie tickets and candy bars as recognition, bonuses barely keep up with inflation, more tenured and knowledgeable employees being pushed out, replaced with just-out-of-college new hires that can be trained to think the Vanguard way, not very much diversity in the workforce, career opportunities plateau at a certain point, not much career mobility, salaries are a good 20% below industry, they try and say benefits make up for that...but they don't.