June marks the 100-year anniversary of the first minimum wage law passed in the United States. And while there is nothing new about low-wage work, we should take this occasion to recognize an even more dispiriting fact about the low-wage workforce: It could have been a thing of the past.

The first minimum-wage law was established on June 4, 1912, in Massachusetts. More than a dozen states would follow over the subsequent 10 years. In 1933, Secretary of Labor Frances Perkins wrote an essay to make the case for a federal minimum wage. Reading Perkins’ essay today reminds us of the potential that minimum-wage laws hold for shaping a fair and productive economy.

At the time of her writing, the nation was in the midst of the Great Depression, and Perkins feared the destructive potential of the growing number of “fly-by-night” sweatshop operators attempting to gain an unfair advantage over their competitors by selling cheaper products made possible by rock-bottom labor costs. In other words, these low-wage sweatshop operators were cheaters. They offered cheaper products by taking advantage of workers who, in a period of record unemployment, had no choice but to accept whatever job they could get — in some cases, earning only 3.5 cents per hour.

The purpose of a minimum-wage law was not only to protect workers from abuse by their employers but to also ensure fair competition by requiring that all businesses play by the same rules.

The first federal minimum-wage law was established in 1938, five years after Perkins’ article appeared. Yet, after several decades of Congressional stewardship maintaining a strong minimum wage, the real value of the minimum wage was allowed to plummet over the last four decades. As a result, the minimum wage peaked in 1968 and has since trailed behind the rising cost of living. In fact, the minimum wage would be more than $10 today if it had simply kept pace with inflation. Instead, it’s only $7.25 an hour — or a little more than $15,000 a year.

The problems associated with low wages are no longer just an emerging threat, as Perkins once feared, but have instead come to define a significant share of the labor market. These problems will persist. Low-wage industries are now among the economy’s fastest-growing sectors, and some of the lowest-paid occupations are expected to create the largest numbers of new jobs over the next several years. For many employers, low wages are part and parcel of a robust growth strategy. As of last year, 35 of the nation’s 50 largest low-wage businesses posted profits that exceeded their pre-recession levels.

Meanwhile, the vast majority of businesses in the U.S. have yet to recover from the recession, particularly small businesses. A Gallup poll from earlier this year revealed that 85 percent of small businesses still have no intention of hiring or expanding their business because demand remains so weak.

We are three years out from the official end of the recession, and workers’ wages are declining rather than rebounding. From March 2011 to March 2012, real average hourly earnings fell 0.6 percent for all private-sector workers and declined by 1 percent for nonsupervisory and production workers.

Perhaps the saddest fact is the low-wage workforce has become an all-too-familiar fixture of the American economy. If Perkins were alive today, she would only need one look at our outdated minimum-wage law to know that our economy has become an anticompetitive environment where low-road employers can thrive at the expense of both other employers and workers.

Now, 100 years after the first minimum-wage law was passed, low-wage industries once again threaten to impoverish America’s workforce and derail the entrepreneurial ambitions of small business owners. And the American people have noticed. According to a recent poll, more than two-thirds of Americans support raising the minimum wage to more than $10 per hour. This support is behind a proposal by Sen. Tom Harkin, D-Iowa, that would raise the minimum wage to $9.80 an hour, significantly raise the minimum wage for tipped workers (currently $2.13 an hour) and provide for annual cost-of-living adjustments for both.

There was nothing inevitable about the low-wage economy that we find today. What decades of experience tell us, however, is that unless we seriously acknowledge our responsibility to maintain the value of the minimum wage, we have little reason to expect anything different in the century ahead.

Owens is executive director of the National Employment Law Project. A version of this op-ed appeared in The Hill.