The gender pay gap in Sen. Elizabeth Warren's office is nearly 10 percent wider than the national average, meaning women in the Massachusetts Democrat's office will have to wait longer than most women across the country to recognize Equal Pay Day.

Equal Pay Day, created two decades ago by the National Committee on Pay Equity, is scheduled by using the Census Bureau annual unadjusted gender pay gap to determine how far into the next year women would have to work to match annual earnings of men. Last year's figures, showing that women earned 79.6 percent of what men earned, put Equal Pay Day on Tuesday April 4, more than three months into the calendar year.

However, women working for Warren were paid just 71 cents for every dollar paid to men during the 2016 fiscal year, according to a Washington Free Beacon analysis.

The median annual earnings for women staffers, $52,750, was more than $20,000 less than the median annual earnings for men, $73,750, according to the analysis of publicly available Senate data.

When calculated using average salaries rather than median, the pay gap expands to just over $26,051, or about 31 percent.

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