Businesses offering discounts on Equal Pay Day

April 4 marks Equal Pay Day in America and a new campaign launched by Facebook's Sheryl Sandberg is aimed at closing the wage gap for women.

American women — who make up 47.4 percent of the U.S. labor force — are paid 20 percent less than men on average. Black and Hispanic women are paid even less at 46 percent and 37 percent, respectively. Additionally, the wage gap widens with higher education levels, according to Sandberg.

The #20PercentCounts campaign, spearheaded by the Facebook COO's LeanIn.org, offers 20 percent discounts or special deals at more than 300 local businesses across the country to highlight the unfair gap. National business partners include Lyft, LUNA, Salesforce and Procter & Gamble, according to the website.

The idea behind it is that if a woman makes 20 percent less than a man, she should have to pay 20 percent less. The discounts are open to all.

RELATED: Here's a breakdown of the gender pay gap across each state:

51 PHOTOS
Gender pay gap state to state ranking
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Gender pay gap state to state ranking

51. Louisiana 

Gender pay gap: 34.7%

(Ian Dagnall / Alamy)

50. Utah 

Gender pay gap: 32.4%

(CountyLemonade/Flickr)

49. Wyoming 

Gender pay gap: 31.2% 

(Philip Scalia / Alamy)

48. West Virginia

Gender pay gap: 30%

(J. Stephen Conn/Flickr)

47. North Dakota

Gender pay gap: 28.7%

(Tim Evanson/Flickr)

46. Alabama

Gender pay gap: 27.4%

(Danny Hooks / Alamy)

45. Idaho

Gender pay gap: 27.2%

(Philip Scalia / Alamy)

44. Oklahoma

Gender pay gap: 26.5%

(thefixer/Flickr)

43. Montana

Gender pay gap: 25.8%

(John Elk III / Alamy)

42. Michigan

Gender pay gap: 25.5%

(curiousjohn/Flickr)

41. Indiana

Gender pay gap: 24.8%

(ellenm1/Flickr)

40. New Hampshire

Gender pay gap: 24.3%

(cmh2315fl/Flickr)

39. South Dakota

Gender pay gap: 23.8%

(SuperStock / Alamy)

38. Mississippi

Gender pay gap: 23%

(Don Smetzer / Alamy)

37. Kansas

Gender pay gap: 23%

(Jim West / Alamy)

35. Iowa

Gender pay gap: 22.7%

(Ellen Isaacs / Alamy) 

34. Missouri

Gender pay gap: 22.6%

(L. Allen Brewer/Flickr)

33. Ohio

Gender pay gap: 22.2%

(sailwings/Flickr)

32. New Mexico

Gender pay gap: 21.9%

(Patrick Ray Dunn / Alamy)

31. Arkansas

Gender pay gap: 21.8%

(Buddy Mays / Alamy)

30. Texas

Gender pay gap: 21.2%

(Ian Dagnall / Alamy)

29.  Maine

Gender pay gap: 21.2%

(PHOTOPHANATIC1/Flickr)

28. Nebraska

Gender pay gap: 21.1%

(Ian G Dagnall / Alamy)

27. Wisconsin 

Gender pay gap: 21.1%

(Jeff Greenberg 5 / Alamy)

26. Illinois

Gender pay gap: 20.9%

(incamerastock / Alamy)

25. Pennsylvania

Gender pay gap: 20.8%

(dannyfowler/Flickr)

24. Kentucky

Gender pay gap: 20.1%

(toddmundt/Flickr)

23. Virginia

Gender pay gap: 19.8%

(JoeDuck/Flickr)

22. South Carolina

Gender pay gap: 19.8%

(Ellisphotos / Alamy)

21. New Jersey 

Gender pay gap: 19.7%

(Robert Quinlan / Alamy)

20. Alaska

Gender pay gap: 19.2%

(retro traveler/Flickr)

19. Delaware

Gender pay gap: 19.0%

(J. Stephen Conn/Flickr)

18. Tennessee

Gender pay gap: 18.5%

(Jim Nix / Nomadic Pursuits/Flickr)

17. Minnesota

Gender pay gap: 18.4%

(kla4067/Flickr)

16. Rhode Island

Gender pay gap: 18.3%

(Dougtone/Flickr)

15. Georgia 

Gender pay gap: 18.2%

(Ian Dagnall Commercial Collection / Alamy)

14. Colorado 

Gender pay gap: 18.1%

(Jesse Varner/Flickr)

13. Massachusetts

Gender pay gap: 18.0%

(Manu_H/Flickr)

11. Connecticut

Gender pay gap: 17.4%

(Dougtone/Flickr)

10. Vermont

Gender pay gap: 16.2%

(pthread1981/Flickr)

9.  Arizona

Gender pay gap: 15.9%

(Photoshot Holdings Ltd / Alamy)

8. California

Gender pay gap: 15.8%

(Robert Landau / Alamy)

7. North Carolina

Gender pay gap: 15.3%

(sevenblock/Flickr)

6. Florida

Gender pay gap: 15.1%

(FL Stock / Alamy)

5. Nevada

Gender pay gap: 14.9%

(D-Stanley/Flickr)

4. Maryland

Gender pay gap: 14.6%

(tim caynes/Flickr)

3. Hawaii

Gender pay gap: 14.1%

(Mauro Ladu / Alamy)

2. New York

Gender pay gap: 13.2%

(drpavloff/Flickr)

1. Washington D.C.

Gender pay gap: 10.4%

(Alexandre Deslongchamps via Getty Images)

Puerto Rico has the smallest gender pay gap, and it benefits women. 

Gender pay gap: -4.6% -- Women earn more than men by a small margin

(Fuse via Getty Images)

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The campaign was first launched in Washington, D.C. in 2013, however, this year marks the first year of the nationwide effort. Sandberg says she hopes the movement will cause more companies to close the wage gap and possibly even spark legislation.

Read: The 10 Biggest Career Mistakes Women Make

According to statics on LeanIn.org, if the gender pay gap was closed:

  • The U.S. workforce would add $513 billion in new income ever year.
  • The average Hispanic woman would earn $1 million more over the course of her career.
  • Black women, on average, could afford 14 additional months of mortgage payments.
  • The average woman could afford 78 more weeks of food for her family.
  • More than 3 million working women and their families would not be in poverty.

In March, Iceland became the first country to officially require gender pay equality. The new Icelandic law requires public and private companies with more than 25 employees to prove they are paying all employees equally "regardless of their gender, ethnicity, sexuality, or nationality."

Up Next: The Highest Paying Jobs for Women

This article originally appeared on GOBankingRates.com: Businesses Offering Discounts on Equal Pay Day

​​​​​​More from GOBankingRates:
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