WASHINGTON (AP) — Lacking congressional backing to raise wages or end gender pay disparities, President Barack Obama is imposing his policies directly on federal contractors, following a long-established tradition of presidents exerting their powers on a fraction of the economy directly under their control.

This week, the president will sign an executive order that would prohibit federal contractors from retaliating against employees who discuss their pay with each other. The prohibition on the wage "gag rules" is similar to language in a Senate bill aimed at closing a pay gap between men and women. That legislation is scheduled for a vote this week, though it is not likely to pass.

In addition, Obama on Tuesday will direct the Labor Department to adopt regulations requiring federal contractors to provide compensation data based on sex and race. The president will sign the executive order and the presidential memo during an event at the White House where he will be joined Lilly Ledbetter, whose name appears on a pay discrimination law Obama signed in 2009.

This week's steps showcase Obama's efforts to take action without congressional approval and illustrate how even without legislation, the president can drive policy on a significant segment of the U.S. economy. At the same time, it also underscores the limits of his ambition when he doesn't have the backing of Congress for his initiatives.

Republicans maintain that Obama is pushing his executive powers too far and that he should do more to work with Congress. His new executive orders are sure to prompt criticism that he is placing an undue burden on companies and increasing their costs.

Federal contracting covers about one-quarter of the U.S. workforce and includes companies ranging from Boeing to small parts suppliers and service providers. As a result, presidential directives can have a wide and direct impact. Such actions also can be largely symbolic, designed to spur action in the broader economy.

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"This really is about giving people access to more information both to help them make decisions at the policy level but also for individuals," said Heather Boushey, executive director and chief economist at the Washington Center for Equitable Growth who has been working with the administration to get compensation information about the nation's workforce.

"This is definitely an encouraging first step," she said.

Federal contractors, however, worry that additional compensation data could be used to fuel wage related lawsuits, said James Plunkett, director of labor policy at the U.S. Chamber of Commerce.

What's more, he said, such orders create a two-tiered system where rules apply to federal contractors but not to other employers. Those contractors, knowing that their business relies on the government, are less likely to put up a fight, he said.

"Federal contractors ultimately know that they have to play nicely to a certain extent with the federal government," he said.

Separately, on Monday, Obama will also announce the 24 schools that will share in more than $100 million in grants to redesign their schools to better prepare high school students for college or for careers. The awards are part of an executive order Obama signed last year. Money for the program comes from fees that companies pay for visas to hire foreign workers for specialized jobs.

The moves represent a return to economic issues for the president after two weeks devoted almost exclusively to diplomacy and the final deadline for health insurance coverage. A trip to Asia in two weeks is sure to change the focus once again.

Still, Obama has declared this a year of action, whether Congress supports him or not.

In February, Obama signed an executive order increasing the hourly minimum wage for federal contractors from $7.25 per to $10.10. While White House officials estimated such an increase would affect only 100,000 people, they said the move could encourage states or individual businesses to act on their own to increase workers' wages.

The Gap, the clothing retailer, announced in February that it would set the minimum wage for workers at $9 an hour this year and $10 an hour in 2015. And since Obama first called for a minimum wage increase in his State of the Union address in 2013, seven states and the District of Columbia have increased their wage requirements.

Obama's go-it-alone strategy is hardly new. The most enduring workplace anti-discrimination laws began with an executive order signed by President Franklin Delano Roosevelt in June 25, 1941, outlawing discrimination based on race, color, creed and national origin in the federal government and defense industries.

President John F. Kennedy broadened that in 1961 with an order that required government contractors to take affirmative action to ensure hiring "without regard to their race, creed, color or national origin."

President George W. Bush ordered federal contractors to ensure that their workers were in the country legally by requiring the use of an electronic employment-verification system.

Jeffrey Hirsch, a former lawyer with the National Labor Relations Board, said presidential executive orders that affect federal contracting workforces can over time demonstrate that those practices are less onerous than initially imagined. Still, he said, presidents don't often undertake such executive action unless some political support already exists.

"But it's an important step in implementing things in a broader scale," said Hirsch, now a professor at the University of North Carolina School of Law.

By employing such executive actions, however, Obama has also drawn attention to areas where he has chosen not to act on his own.

The White House has resisted pressure from gay rights advocates who want have Obama to sign an anti-discrimination executive order that would protect gays and lesbians working for federal contractors. The White House wants the House to approve a Senate-passed bill extending those protections to all Americans.

On Friday, the Human Rights Campaign, the nation's largest gay rights group, criticized the White House for saying such an executive order would be redundant if Congress were to pass a White House-supported bill. It's an argument the White House has not made when it comes to minimum wage or anti-gag rule orders imposed on federal contractors.