Federal Reserve Chair Jerome H. Powell on Thursday announced a major shift in the way the central bank aims to achieve maximum employment and stable prices, marking lessons learned from the most recent economic expansion.

The new approach signals that the Fed won’t increase interest rates to respond to low unemployment levels and also won’t worry as much about low rates triggering a rise in prices.

Speaking to the Fed’s yearly economic policy symposium traditionally held in Jackson Hole, Wyo., Powell emphasized the Fed’s goal of reaching maximum employment. As the Fed debuted a long review of its monetary policy framework, the Fed concluded that inflation could temporarily run a bit over its 2 percent target if that means more Americans stay in and join the workforce.

“Our revised statement reflects our appreciation for the benefits of a strong labor market, particularly for many in low- and moderate-income communities, and that a robust job market can be sustained without causing an unwelcome increase in inflation," Powell said in a statement.

In the years before the pandemic, the Fed grappled with how the unemployment rate could continue to fall without triggering an unwelcome rise in prices. Now, the Fed is officially signaling that employment can run stronger, and that the economy can run hot, without setting off unwanted spikes in inflation. Practically, that means the Fed won’t be raising interest rates anytime soon and wouldn’t increase rates or brace for a rise in inflation even as employment levels strengthen.

The Post spoke to Americans about the stresses of an uncertain income during the coronavirus pandemic. (The Washington Post)

After the Great Recession, Fed leaders worried that as interest rates trended downward, the central bank would be left with less room to slash rates in the event of another downturn. At the same time, central bank leaders worried about what to do about inflation persistently staying below the 2 percent target. Striking the right balance between interest rates and inflation is key to fostering an economy that grows at a steady pace and keeps Americans securely employed.

“With interest rates generally running closer to their effective lower bound even in good times, the Fed has less scope to support the economy during an economic downturn by simply cutting the federal funds rate,” Powell said. “The result can be worse economic outcomes in terms of both employment and price stability, with the costs of such outcomes likely falling hardest on those least able to bear them.”

When it comes to price stability, the Fed’s old rule book dictated that the moment inflation topped the 2 percent threshold, the Fed would quickly raise rates to bring inflation back down. Now, it is adopting a form of average inflation targeting, which essentially means that the Fed will allow for some overshoot of the 2 percent target to balance out periods when inflation skirted below. Those overshoots will be moderate, Powell noted Thursday, and aren’t intended to last a long time.

“This change may appear subtle, but it reflects our view that a robust job market can be sustained without causing an outbreak of inflation," Powell said in his virtual Jackson Hole speech, speaking from Washington.

Now the question becomes how exactly the Fed can overshoot its inflation target. Battling the current recession, Fed leaders have said interest rates will stay at zero for some time. In a call with reporters after Powell’s speech, Adam S. Posen, president of the Peterson Institute for International Economics, said it may be a few years before this new approach is put to the test.

“It’s not fully operational until we get to the other side of this crisis," Posen said. “We’ve got two big hurdles before that happens. One is, does inflation ever come back? And two, if it does come back, will the committee … carry through on this commitment that they’re not going to worry too much? And those are greatly unknown.”

The Fed announced a broad review of its monetary policy in November 2018. Last year, leaders traveled the country for “Fed Listens” events to gauge how monetary policy was affecting the lives of workers, small-business owners, low- and moderate-income communities, and others.

In a question-and-answer session after his speech, Powell said that the review allowed the Fed not only to sharpen its understanding of what brings people into the workforce and keep them there but also to arrive at those answers with public input and transparency.

At the time of the review, the Fed thought it was planning for a vastly different economy, one with historically low levels of unemployment and an economic expansion that was still running strong. Then the coronavirus outbreak and recession began, kicking tens of millions of Americans out of the workforce, forcing the Fed to quickly slash rates to zero and bringing massive uncertainty about the economy’s future.

The changes to the Fed’s thinking “explicitly acknowledge the challenges for monetary policy posed by a persistently low interest rate environment,” a Fed news release read. “Here in the United States and around the world, monetary policy interest rates are more likely to be constrained by their effective lower-bound than in the past.”

Markets rallied Thursday morning off Powell’s announcement, which spurred a 200-point rise in the Dow Jones industrial average and helped erase the Dow’s losses from this year.

The sudden recession has also put new pressure on the Fed to shepherd a recovery that lifts all Americans and narrow persistent racial and economic gaps. There’s no expectation that the Fed can heal the economy alone. But the crisis and the run-up to Thursday’s announcement have fueled a fresh examination of exactly what the Fed’s mandate means.

Having a firmer understanding of full employment is also key to reducing inequality, Powell said. For many minority and low-income communities, the benefits of the economic expansion did not arrive until much later in the years after the recession, and many of those gains were wiped out during the current crisis.

Yet even the Fed’s new approach can’t change the fact that the central bank’s tools are blunt. Interest rates affect vast swaths of the economy, and the Fed is not set up to home in on certain segments of the population. In many cases, Powell said that “there are better tools held by elected officials” to address long-standing gaps.

“It needs to be an all-of-government, all-of-society kind of thing,” Powell said. “We’re going to keep doing what we can do. We really need it to be broader than just the Fed.”

Congress, meanwhile, is still stalled on another wave of federal aid. The stock market is flying high, but many unemployed Americans are scraping by without enhanced unemployment payments.

Powell has consistently said that a stable recovery depends on controlling the novel virus, which has been killing an average of more than 1,000 people each day in August. For weeks, Larry Kudlow, director of the National Economic Council, has said the economy is on a “self-sustaining” recovery and may not need additional stimulus to bounce back.

Julia Coronado, president and founder of MacroPolicy Perspectives and a former Fed economist, said that many Americans are bypassed by the market and credit supports that are the Fed’s domain. During a conversation hosted Thursday by Employ America, Coronado said that the Fed’s arsenal is “increasingly not well-suited to the job … in a society characterized by extreme inequality.”

“Full employment is a truly macroeconomic outcome that, as Powell stresses, really means we’re getting to the people that are the most vulnerable,” Coronado said. “They’re the ones that suffer the most in a recession. They’re the last to realize the benefits of the expansion. The Fed doesn’t really have the best tools to get at that."

That said, the Fed has taken significant steps to lessen the pandemic’s economic blow, by flooding the markets with liquidity and rolling out emergency lending programs for struggling local governments and midsize businesses. It’s unclear what the long-term effect of the moves will be or when the Fed will be able to shut down those backstops. Powell and other Fed leaders have emphasized for months that a stable recovery will depend on controlling the virus and have repeated that more aid from Congress may be needed.

The Fed on Thursday also announced that it would conduct a public review of its monetary policy tools and strategy about every five years.

Heather Long contributed to this report.