By Nick Timiraos 

American workers have been waiting years for a big raise. That bump is finally coming--at the gas pump.

If prices were stay at their current levels under $3 a gallon, the average American household could save $380 over the coming year, up from $83 since prices first declined this past summer, according to research firm ClearView Energy Partners. A separate estimate from IHS Global Insight says the average family could save $750 over the next year. By comparison, the median U.S. income grew by just $181 last year from a year earlier after adjusting for inflation.

The drop in gas prices has already raised retailers' hopes for a stronger shopping season, since less spending at the pump gives consumers more to spend on everything from restaurant meals to clothing and haircuts. The Commerce Department on Thursday is to release the first look at retail sales for November. In turn, lower gas prices combined with nascent signs of an increase in wages could provide fuel for a broader upturn in economic growth.

It wasn't long ago that Rebecca Wagner was paying $80 to fill up her Dodge Grand Caravan minivan. Last week, it cost $57. In an economy that's offering few breaks, lower gas prices "have been a big benefit," said Ms. Wagner, who has nine children at home.

Ms. Wagner, 31 years old, works as a sales executive for a radio station in St. George, Utah, and has to drive around town for daily sales calls. "If I'm paying more for gas, then I have to pay more to work," she said.

Regular gasoline fell to $2.64 a gallon in the U.S. on Wednesday, according to auto club AAA, near a five-year low. Gas prices have fallen more than $1 a gallon from their high in June and are down 60 cents from a year ago, the greatest year-over-year savings since 2009. AAA estimates that gasoline prices could fall to $2.50 a gallon by Christmas.

Across the economy, the drop in gas prices could generate a $125 billion windfall for consumers, according to Goldman Sachs economists in a recent research note. Americans spent $370 billion on gasoline in 2013.

"It's a fair bet that most of the reduced energy costs are going to show up as added spending by consumers somewhere," said James Hamilton, an economics professor at the University of California, San Diego. Lower gas prices also tend to boost consumer sentiment in a way "that makes people more optimistic than the added cash in their wallet seems to suggest," he said.

Gas prices have fallen due to a sustained drop in oil prices. In the U.S., such declines often have been accompanied by a recession as consumer demand tumbles. This time around, oil has slid as concerns mount over increased production of oil amid weaker demand in China and the eurozone. That could lead the global economy's deeper underlying problems to weigh on the U.S. economy over time, offsetting some impact from cheaper gasoline.

Also, surging U.S. oil production, particularly from unconventional drilling across North Dakota and Texas, means a drop in oil prices has a thorny underside for the economy. Lower prices could chill new investment and drive some smaller companies out of business, which would hurt economic growth.

Still, for as long as the U.S. remains a net importer of oil, "declines will always be a net positive for the U.S. economy," said Chris Lafakis, senior economist at Moody's Analytics.

Lower-income households are the most sensitive to fluctuations in gas prices because they have lower savings. Last year, the bottom fifth of income earners spent more than 12% of their after-tax income on gasoline, compared to 3% for the top fifth of income earners. In 2000, the bottom fifth spent 8.5% of their income on gas, compared to 2% for the top fifth, according to Moody's Analytics.

"If lower-income households do have a small windfall from lower gasoline prices, the chances that they're going to spend that versus save that is pretty high," said Adele Morris, policy director for the Climate and Energy Economics Project at the Brookings Institution in Washington.

Poorer households tend to have older cars that are less fuel efficient. They also tend to rely heavily on automobiles to get to work because of the locations of their jobs and the hours that they work, said Margaret Simms, director of the low-income working families project at the Urban Institute.

"It absolutely helps. I'm still living paycheck to paycheck," said Sharon Riddell, 51, who began working at a machine-part company in October 2013 after losing her job as a school-bus dispatcher.

While she was unemployed, she picked up work as a limo driver, which she continues on weekends. The garage is 26 miles from her home in Larimer, Pa. She said she fills up her sport-utility vehicle, a Buick Rendezvous, once a week and is saving around $10 each time. "I'll definitely spend a little more on Christmas presents," she said.

City-dwellers with short commutes, on the other hand, will enjoy less of a break. "I'm pleasantly surprised, but I don't spend much on gas," said Max Savich, a 34-year-old software developer in Austin, Texas. He drives a Mercedes Benz convertible roadster but lives just four miles from where he works.

Lower gas prices could have a bigger impact in the South and Midwest, where spending on gas accounts for a bigger chunk of incomes. Airlines, refiners, trucking firms, the tourist industry and restaurants stand to benefit if lower prices are sustained.

Traffic has improved notably over the last two months at Back Yard Burgers, a dining chain based in Nashville, Tenn., with 68 restaurants in 14 states across the southeast, said David McDougall, the company's chief executive. "With lower gas prices putting more money in their pockets, there's a psychological effect," said Mr. McDougall.

Cracker Barrel Old Country Store Inc. saw a 5% increase in sales during the three months ended October from the prior year and a 2.5% increase in the average meal check. "The gas price really speaks to disposable income from consumers," said Sandra Cochran, chief executive of Cracker Barrel, on an earnings call last week.

Cracker Barrel, which has more than 600 stores in 42 states, tends to see stronger sales when more drivers hit the roads because 85% of its stores are located at highway exits and 40% of its customers are nonlocal travelers.

And lower gasoline prices "can be nothing but positive" for the U.S. economy in the short run, said AT&T Inc. Chief Executive Randall Stephenson last week. "That's more money for smartphones and iPhones," Mr. Stephenson said on a conference call with reporters.

In Utah, Ms. Wagner's husband works five hours away on a drilling rig in the oil fields near Duchesne. She said she hasn't worried about whether the recent drop in oil prices will leave him with less work and figures he will save on the long-haul commutes he makes twice every six weeks.

She's not sure how her family will spend any savings, particularly given rising costs of health care and other basic goods. With children, "unexpected things happen all the time," Ms. Wagner said. "Dentists or doctors or whatever the insurance doesn't cover--that's what money goes towards."

Write to Nick Timiraos at nick.timiraos@wsj.com

Access Investor Kit for AT&T, Inc.

Visit http://www.companyspotlight.com/partner?cp_code=P479&isin=US00206R1023

AT&T (NYSE:T)
Historical Stock Chart
From Mar 2024 to Apr 2024 Click Here for more AT&T Charts.
AT&T (NYSE:T)
Historical Stock Chart
From Apr 2023 to Apr 2024 Click Here for more AT&T Charts.