“If women are paid only 79% of what men make, shouldn’t they only work 79% of the day?”

In an effort to illustrate the gender wage gap in America, MTV recently unveiled the 79% Work Clock, a handy alarm clock that chimes when 79% of the work day has passed. It’s a signal for any woman within earshot of the chime to head home since she’s no longer being paid for work done after that point anyway.

Since work hours vary, they also created an accompanying 79% Calculator that lets you input your start and end time for a typical work day. MTV explains, “We’ll show you when 79% of your day has passed and you (or your female colleagues) are no longer being paid. The times even change based on your race.”

Their design is based on studies specific to the U.S., which show that nationally, on average, all women who work full-time, year-round are paid only 79% of what men make per year. What’s more, the wage gap for women of color has been found to be even greater.

(graphic via 79% Work Clock)

Here’s the breakdown of these percentages in dollars from the National Partnership on Women & Families:

“Nationally, on average, a woman who holds a full-time, year-round job is paid \$39,621 per year while a man who holds a full-time, year-round job is paid \$50,383 per year. This means that, overall, women in the United States are paid 79 cents for every dollar paid to men, amounting to a yearly wage gap of \$10,762 between full-time working men and women.”

Nationally, the median annual pay for a woman who holds a full-time, year-round job is \$39,621 while the median annual pay for a man who holds a full-time, year-round job is \$50,383. This means that, overall, women in the United States are paid 79 cents for every dollar paid to men, amounting to an annual gender wage gap of \$10,762. 1 The wage gap can be even larger for women of color. For example, among women who hold full-time, year-round jobs in the United States, African American women are paid, on average, 60 cents and Latinas are paid just 55 cents for every dollar paid to white, non-Hispanic men. 2 Asian women are paid 84 cents for every dollar paid to white, non-Hispanic men, although some ethnic subgroups of Asian women fare much worse.”

We just hope that MTV (and its parent company) puts its money where its mouth and Work Clock are when it comes to equal pay for its staffers.