Editor's Note: (Kristin Rowe-Finkbeiner is executive director and co-founder of MomsRising.org, a nonprofit organization that supports policies to improve family economic security. She is the author of the forthcoming book "Keep Marching: How Every Woman Can Take Action and Change Our World." The views expressed here are solely hers.)
(CNN) Cynthia was at an event for her advertising firm when she noticed that the vast majority of employees in the room were women. Somewhat surprised, she asked her boss why. Instead of lauding the value of women in the workplace, he responded, "because I can pay them less."
"I was 23 and shocked," Cynthia told me. "I hadn't yet learned I was less valuable than a man."
No woman should be made to feel this way -- and certainly no woman should be paid less for her time and effort. But Cynthia's experience isn't an anomaly. Countless women are paid less, discriminated against and overlooked every day.
Take Lynne, a nurse, who said, "In one of my nursing jobs, my pay was $17 per hour, while a male nurse with the same job, less experience and less education was paid $25 per hour."
Or Kate, an executive, who wrote, "I was agency director of a small nonprofit making around $30,000 a year. When I left, the board hired an inexperienced man, paying him double what they had been paying me."
At MomsRising, a nonprofit that supports policies to improve economic security, we regularly hear from women like Cynthia, Lynne and Kate, who write in about their experiences with unequal pay.
Many women discover pay discrimination by accident and fear retaliation for speaking up inside their workplaces. And yet many are now demanding fair pay policies from their state legislators and members of Congress -- and a powerful movement is growing stronger and more effective each day.
Despite the fact that women make up nearly half of the workforce and receive more college degrees than men, they earn significantly less. Today, on average, women earn just 80 cents to a man's dollar, with Latinas earning only 54 cents, black women only 63 cents and mothers only 71 cents.
No, those aren't typos -- those stats are less than a year old, according to the National Women's Law Center.
However, as women raise their voices -- and as many more run for public office -- it's important to remember that this isn't just a moral or ethical fight. It's also an economic one. Studies show corporations make more profits with more women in leadership and have a higher performance with diverse teams.
And keep in mind that three-quarters of mothers are now breadwinners for their families, so when moms make less, then more women and children fall into poverty. And this is not a small number of impacted people: Nearly a quarter of children are now living in poverty in our nation.
Families making less also spend less, which impacts our consumer-driven economy. In fact, if women had pay parity, studies show our national GDP would increase by 3%.
Given the magnitude of the negative impacts of unequal pay, it's not surprising that women are rising up in increasing numbers to fix our broken systems. For instance, at MomsRising, our volunteer growth rate tripled since the last presidential election, and the number of unique MomsRising supporters taking action jumped 79% year-over-year.
Women are speaking out for equal pay measures, along with other economic security, health care and anti-discrimination policies, with increasing urgency and frequency. Women are writing letters to leaders, making calls, meeting with legislators, starting petitions, sharing their stories, gathering together and speaking out.
And our advocacy is making a difference. Just a couple of weeks ago, Washington state passed the Equal Pay Opportunity Act, which advanced paycheck transparency, addressing gendered job tracking and more. New Jersey followed by passing one of the strongest equal pay bills in the nation -- and Rhode Island is poised to advance strong equal pay legislation this week. Over thirty additional states are considering equal pay legislation this year.
Corporate momentum for change is growing, too, as businesses realize pay parity isn't just the right thing to do -- it's the economically smart thing to do, since women are the majority of their customers. At a recent shareholders meeting, Starbucks announced its commitment to 100% gender and racial pay equity and shared tips for other corporations to reach pay parity, too.
Other businesses are getting on board, too. For Equal Pay Day, more than 30 independent coffee shops and small businesses partnered with MomsRising and the Main Street Alliance to serve custom coffee sleeves and napkins featuring statistics, facts, and ways to take action for equal pay.
This is just the beginning. Our power is growing each day -- and not a moment too soon. It's time for us to double down on rising up and to commit to #KeepMarching until each and every one of us finally has pay parity.