President Barack Obama speaks before signing a document designating the Point Arena-Stornetta Public Lands as part of the California Coastal National Monument, Tuesday, March 11, 2014, during a signing ceremony in the Oval Office of the White House in Washington. The action will permanently protect some 1,665 acres of federal lands on the Mendocino County coast in Northern California, just north of Point Arena. It will expand a national monument created in 2000 by President Bill Clinton to include coastal bluffs and shelves, tide pools, onshore sand dunes, coastal prairies, riverbanks and the mouth and estuary of the Garcia River. (AP Photo/Charles Dharapak)

If President Barack Obama goes through with a reported proposal to expand overtime protections, he could end up giving 10 million workers a raise.

Obama will direct the Secretary of Labor as early as Thursday to overhaul the rules governing overtime pay for workers who are considered exempt because their employers define them as an "executive or professional," according to various reports.

The details of the proposal have yet to be released, but if Obama raises the salary threshold for being exempt from overtime pay from its current $455 a week ($23,660 a year) to $970 a week (about $50,000 annually), the move could provide a raise to 10 million workers, a recent analysis from the Economic Policy Institute found.

"It's a joke that you could be paid so little and be considered an executive and exempted from being paid overtime," said Ross Eisenbrey, vice president of EPI, a research organization that advocates for economic fairness.

The chart below from EPI shows how the weekly salary threshold for overtime exemption hasn't kept up with inflation.

Overhauling overtime is one of the few ways that Obama can push forward an economic agenda that benefits low-wage workers without Congress. The president has talked about raising the minimum wage to $10.10 an hour and expanding the Earned Income Tax Credit -- both moves that could lift millions of the working poor out of poverty -- but he needs approval from Congress to do so.

Changing overtime rules is one reform Obama can effect by himself, though his proposal could face opposition from business groups during the required public comment period.

If Obama's revamp meets activists' hopes, it could mean a major life change for a large swath of workers. Under current labor laws, hourly employees are entitled to get paid time and a half for each hour they work beyond the weekly 40-hour threshold. The law makes an exception for salaried workers making more than $23,660 as long as they're defined as a professional, an administrator or an executive.

But many retailers, restaurants and other companies squeeze as much as possible out of low-level workers without paying them overtime by defining them as managers, even though those same employees often do grunt work like stocking shelves, cooking in the back of the kitchen and cleaning up at the end of the day, said Cathy Ruckelshaus, the legal co-director at the National Employment Law Center. To address this, Obama could narrow the definition of a manager, raise the salary threshold or do both.

"Generally the problem is that the so-called white collar exemption has been expanded over time to include lots of surprisingly low-wage workers," Ruckelshaus said. "It sort of is galling for someone who is, say, a fast-food manager to be called a manager even though they may be doing things that a lot of other line employees are doing."

Between 1938, when the Fair Labor Standards Act first took effect, and 1975, Labor Department officials were constantly tweaking the overtime provision to keep up with the times, in particular to ensure that the salary threshold matched pace with inflation, Eisenbrey said. But from 1974 to 2004, the law basically stayed the same.

In 2004, then-President George W. Bush revamped overtime laws to expand the definition of an exempt worker to include employees who did very little supervising. He also raised the salary threshold slightly. Democrats and organized labor criticized the changes at the time, accusing Bush of cheating up to 6 million workers out of overtime pay.

"It didn't take 15 minutes for employers to start taking advantage of it," Eisenbrey said.

That problem only got worse during the recession and recovery as workers lost bargaining power. Between 2001 and 2011, the number of lawsuits from workers alleging their employers violated overtime laws surged 400 percent. In many cases, these suits claimed that workers were classified as ineligible for overtime even though they spent the bulk of their time performing menial tasks.

"The workers have started to see their hours increase and the jobs not feel like what are supposed to essentially be white-collar jobs where they have a lot of discretion and control over the decisions they make about their work," Ruckelshaus said.

At the same time these workers are feeling squeezed, companies are reaping record profits. Overtime pay is supposed to be a way of avoiding that dynamic, by incentivizing employers to hire more employees instead of relying on just a few to work long hours, Ruckelshaus said.