For complete results of this study for all S&P 500 companies, along with methodology, caveats, and in-depth analysis, check out Glassdoor Economic Research.
Companies included in this analysis are based on membership in the S&P 500 index. Total CEO compensation is directly from SEC proxy filing statements (form DEF 14A) as of 8/14/2015. CEOs were those listed as of 2014 or 2013, whichever is the most recent year available from company SEC filings. In cases when two or more CEOs are reported for the year, to the best of our ability we selected the CEO who served for the majority of the year. SEC filings were not available for six of the 500 companies: Mylan N.V., Kraft Heinz Co., Columbia Pipeline Group Inc., Baxalta, PayPal and Westrock Co.
Figures for median worker compensation are based on Glassdoor salary reports for U.S. employees between 1/1/2009 through 8/17/2015, and are inflation adjusted into 2014 dollars. Total compensation includes base pay, tips, commissions, bonuses and all other forms of pay reported. Full-time and part-time employees are included in an effort to be consistent with SEC requirements. To ensure statistical validity, only companies with 30 or more Glassdoor salary reports shared by employees during this timeframe are included, which was available for 441 of the S&P 500 companies. For each employer, we also show the company rating on Glassdoor as of August 19, 2015 (Ratings based on a 5-point scale: 1.0=very dissatisfied, 3.0=OK, 5.0=very satisfied).
Here are the 10 companies where the ratio of CEO pay versus employee pay is highest, according to Glassdoor: