WASHINGTON (AP) — U.S. hiring decelerated sharply last month in the face of high interest rates as employers added an unexpectedly weak 114,000 jobs.

Friday’s Labor Department report showed a drop from the 179,000 jobs created in June. Forecasters had expected to see 175,000 jobs in July. The unemployment rate rose to 4.3%, the highest since October 2021, as the number of jobless Americans rose by 352,000.

The economy had proven unexpectedly sturdy in the face of the Federal Reserve’s campaign to tame inflation with high interest rates. The Fed raised its benchmark rate 11 times in 2022 and 2023, taking it to a 23-year high. But the higher borrowing costs appear to be taking a toll.

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The unemployment rate has risen for four consecutive months. Its jump to 4.3% in July crossed a tripwire that historically has signaled that the United States is in recession — though economists say the gauge probably is not reliable in the topsy-turvy post-pandemic economy.

In another sign that the labor market is cooling, average hourly wages rose just 3.6% from July 2023, the smallest year-over-year gain since May 2021 and a development likely to ease inflationary pressure in the economy.

The economy is weighing heavily on voters’ minds as they prepare for the presidential election in November. Many are unimpressed with the strong job gains of the past three years, exasperated instead by high prices. Two years ago, inflation hit a four-decade high. The price increases eased, but consumers are still paying 19% more for goods and services overall than they were before inflation first heated up in spring 2021.

This is the so-called Sahm Rule, named for the former Fed economist who came up with it: Claudia Sahm. She found that a recession is almost always already underway if the unemployment rate (based on a three-month moving average) rises by half a percentage point from its low of the past year. It’s been triggered in every U.S. recession since 1970. And it’s had only two false positives since 1959; in both of those cases - in 1959 and 1969 - it was just premature, going off a few months before a downturn began.

Still, Sahm, now chief economist at the investment firm New Century Advisors, said that this time “a recession is not imminent’’ even if unemployment crosses the Sahm Rule threshold.

Many economists believe that today’s rising unemployment rates reveal an influx of new workers into the American labor force who sometimes need time to find work, rather than a worrisome increase in job losses.

“Labor demand is slowing,’’ said Matthew Martin, U.S. economist at Oxford Economics, “but companies are not laying off workers in large numbers, which reduces the odds of a negative feedback loop of rising unemployment leading to income loss, reduction in spending, and more layoffs.’’

Indeed, new Labor Department data this week showed that layoffs dropped in June to the lowest level in more than a year and a half.

America’s jobs numbers have been unsettled by an unexpected surge in immigration - much of it illegal - over the past couple of years. The new arrivals have poured into the American labor force and helped ease labor shortages across the economy - but not all of them have found jobs right away, pushing up the jobless rate. Moreover, people who have entered the country illegally are less inclined to respond to the Labor Department’s jobs survey, meaning they can go uncounted as employed, notes Oxford’s Martin.

Nonetheless, Sahm remains concerned about the hiring slowdown, noting that a deteriorating job market can feed on itself.

“Once you have a certain momentum going to the downside, it often can get going,’’ Sahm said. The Sahm rule, she says, is “not working like it usually does, but it shouldn’t be ignored.’’

Sahm urged Fed policymakers to preemptively cut their benchmark interest rate at their meeting this week, but they chose to leave it unchanged at the highest level in 23 years.

The Fed raised the rate 11 times in 2022 and 2023 to battle rising prices. Inflation has duly fallen — to 3% in June from 9.1% two years earlier. But it remains above the Fed’s 2% target and policymakers want to see more evidence it’s continuing to come down before they start cutting rates. Still, they are widely expected to make the first cut at their next meeting in September.

Friday’s job report could give them some encouraging news. According to FactSet, forecasters expect last month’s average hourly wages to come in 3.7% above July 2023 levels. That would be the smallest gain since May 2021 and would mark progress toward the 3.5% that many economists see as consistent with the Fed’s inflation goal.