Boy, when employees at Apple and Starbucks have lost enthusiasm, the Mayans really are onto something.
(Read More: What Wall Street Wants From Mark Zuckerberg)
"It's getting harder for customer service and retail companies to do well on this list," said Hohman. Apple's rating hasn't changed in a year, it's stayed steady at 3.9, but so many other companies have moved ahead.
Which companies didn't make the list at all? In the tech sector, the lowest rated well known companies include Groupon, HP, and Netflix.
Yahoo is actually beginning to move up, with a 3.3 rating, and new CEO Marissa Mayer has an 86 percent approval rating.
There are some traditional American industries that were ranked well by workers. Companies which have made the list since it started in 2009 include Chevron (#13) and General Mills (#35). Who knew working for Big Oil and Big Food could be Big Fun? Glassdoor cites the work/life balance benefits at both companies, even if shares of both have underperformed the market this year.
Underperformance also hasn't stopped employees from "liking" Facebook.
So can we stop poking fun at the social networking monolith, considering the folks there are probably happier than most of us? Potentially richer, too? Plus they get to wear jeans and hoodies to work? I mean, does anyone at Facebook have anything bad to say about it?
(Read More: Facebook Will Disappear in 5 to 8 Years: Analyst)
Someone identifying him/herself as a Facebook Product Engineer wrote on Glassdoor, "It can be very stressful. You have to get used to all the media attention and mudslinging."
—By CNBC's Jane Wells; Follow her on Twitter: