A new report by the National Employment Law Project concluded that 42 percent of workers in the United States are paid less than $15 an hour.

Titled “The Growing Movement for $15,” the report provides wage and demographic figures on the aforementioned 42 percent. The report comes out days after adjunct professors and fast-food, home care, child care, retail and airport workers announced the largest-ever national mobilization for higher pay.

The overall report finds that 6 out of 10 of the largest occupations with median wages less than $15, such as retail, personal care and restaurant jobs, are projected to add the most jobs in the coming years. NELP’s analysis of recent wage data breaks down by age, gender, race, occupation and industry. According to their results, nearly 46 percent of workers who are paid less than $15 an hour are 35 or older, and more than half of African-American workers (and close to 60 percent Latino workers) make less than $15. Also, more than 90 percent of workers in the fast-food, child care and home care industries—overwhelmingly dominated by women—are paid less than $15 an hour.

Christine Owens, executive director of NELP, said that increasing salaries to $15 an hour would not only help decrease poverty but also add to the economy.

“Low-wage occupations in sectors such as retail, home care and restaurants are among the fastest growing in the country,” said Owens in a statement. “If we want an economy that is balanced and shares prosperity fairly, we must raise wages in these sectors so that they can serve as the cornerstones to rebuilding our nation’s disappearing middle class.”

Seattle and San Francisco have already adopted a $15 minimum wage, and workers have rallied in New York, Los Angeles and Washington, D.C., and in Oregon and Delaware for the same. The campaign has made successful inroads in the private sector as well. Insurance giant Aetna, Johns Hopkins Medicine and the University of Rochester have all raised their base pay to close to $15 an hour.

Irene Tung, senior policy researcher at NELP, said that debunking the myth of service jobs plays a major role in how this issue is approached.

“The idea that low-paid service jobs are only a stepping stone for teenagers or young people starting out in the workforce is plainly wrong,” said Tung in a statement. “Many people are spending decades working in jobs that pay too little to survive—and the people who fill these jobs are overwhelmingly workers of color and women. The prevalence of low wages in many of our economy’s growth sectors is a national crisis, and one that industry leaders in these sectors must take greater steps to address.”

Since the movement began in November 2012, wage increases to $15 have gained momentum in the public and private sectors, ranging from minimum wage laws and executive orders, to collective bargaining agreements and pay adjustments by individual employers.