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 work: It could have been a thing of the past.

The first minimum-wage law was established on June 4, 1912, in Massachusetts. 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, the nation was in 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.

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, but have come to define a significant share of the labor market. 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 jobs over the next several years. For many employers, low wages are part of robust growth.

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.

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.

Perhaps the saddest fact is the low-wage workforce has become an all-too-familiar fixture of the American economy. If Perkins were alive, 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.

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.