Apple employees downgrade Tim Cook

Botched IPO be damned! When your CEO makes you really, really rich, you're bound to like him.

Employees' approval rating for Facebook CEO Mark Zuckerberg jumped to a whopping 99% in the 2013 list, up from 85% the previous year. Facebook employees were able to cash out their stock grants for the first time in 2012 following the company's public stock offering, making several first-time millionaires.

That near-perfect score vaulted Zuck to the No. 1. position this year. Glassdoor quoted one Facebook (FB) employee who said the company is "an open community from Zuck on down. Mutual trust company-wide and sense of community and drive, instilled by our CEO, who we all truly respect."

Zuckerberg beat out SAP's (SAP) co-CEOs Bill McDermott and Jim Hagemann Snabe (99% approval); Cognizant's (CTSH) Frank D'Souza (96%); EMC's (EMC) Joe Tucci (96%); and Qualcomm's (QCOM) Paul Jacobs (95%).

NEXT: Marissa Mayer easily trumps predecessors