The average CEO base salary at a S&P 500 company is over $10 million. With stock options and other benefits, that income nearly doubles. By contrast, an ordinary worker employed full-time in America earns approximately $45,550 annually.

And while CEO pay in the United States has seemingly continued to rise regardless of both economic conditions and company performance, wages for typical workers have remained relatively flat.

According to an analysis by think tank Economic Policy Institute of stock options, cash salaries, and other benefits, CEO compensation at the nation’s 350 largest companies rose by 17.6% between 2016 and 2017, and by over 1,000% between 1978 and 2017. For the average worker, wages remained effectively flat, inching up 0.3%, between 2016 and 2017, and rising a meager 11.2% since 1978.

Most of the nation’s CEOs would fall comfortably into the top 0.1% or 0.01% of earners. For most Americans, the amount of money a CEO earns in a year is outside the realm of comprehension. And yet, many such ordinary individuals are employed at the very companies run by the nation’s ultra-rich executives.

To identify the nation’s most unequal-paying companies, 24/7 Wall St. reviewed the ratio between annual CEO base pay and average worker salary at 168 large U.S. companies, using data from benefits and compensation information website Payscale. CEO names, cash and total compensation figures, as well as the median worker annual pay, came from Payscale. Data is as of 2016. We have indicated when a given CEO is no longer employed by the company.

Many of these companies are international conglomerates. We chose to focus on pay inequities across the U.S. workforce. If CEO compensation levels were compared to average wages worldwide, the CEO-to-average worker pay gaps would be considerably larger. No pay gap for a company on this list is greater than 500 to 1. Looking at CEO-to-world average wage ratios, pay gaps exceed 1,000 to 1 at 33 corporations in the Russell 3000.

50. HCA Holdings
> CEO to typical worker wage ratio (cash): 100 to 1
> CEO: R. Milton Johnson
> CEO pay, cash: $5,604,403
> CEO pay, total compensation: $13,970,215
> Median worker annual pay: $56,100

49. Citigroup
> CEO to typical worker wage ratio (cash): 101 to 1
> CEO: Michael L. Corbat
> CEO pay, cash: $8,102,293
> CEO pay, total compensation: $14,595,462
> Median worker annual pay: $80,200

48. Pnc Financial Services Group
> CEO to typical worker wage ratio (cash): 106 to 1
> CEO: William S. Demchak
> CEO pay, cash: $5,365,501
> CEO pay, total compensation: $12,325,411
> Median worker annual pay: $50,400

47. Dow Chemical
> CEO to typical worker wage ratio (cash): 108 to 1
> CEO: Andrew N. Liveris
> CEO pay, cash: $8,266,471
> CEO pay, total compensation: $21,428,875
> Median worker annual pay: $76,600

46. Interpublic Group Of Companies
> CEO to typical worker wage ratio (cash): 112 to 1
> CEO: Michael I. Roth
> CEO pay, cash: $7,353,809
> CEO pay, total compensation: $14,458,102
> Median worker annual pay: $65,500