(Bloomberg) -- FedEx Corp. cut its outlook for annual profit after missing analysts’ quarterly earnings estimates because of higher costs and stalled growth in shipments. The shares fell as much as 5% after regular hours.

The company said a tight labor market was a key drag on fiscal first-quarter profit, as a dearth of workers drove up wages, reduced network efficiencies and increased the need to hire outside transportation services. Executives estimate this resulted in $450 million in added costs from a year earlier.

Adjusted earnings were $4.37 a share for the quarter ended Aug. 31, down from $4.87 a year earlier, FedEx said in a statement. Analysts had expected $4.92, according to 24 estimates compiled by Bloomberg. Unadjusted operating margin was 6.4%, down from 8.2% a year earlier.

“The current labor environment is driving inefficiencies in the operation of our networks and significantly impacting our financial results,” said Raj Subramaniam, FedEx’s president and chief operating officer.

That prompted FedEx to slash its full-year outlook for adjusted per-share earnings to a range of $19.75 to $21, which excludes expenses from the integration of TNT Express and variations in the pension fund value. The previous range, first provided in June after the company’s 2021 fiscal year ended on May 31, was $20.50 to $21.50. The company left its target for capital expenditures this year unchanged at $7.2 billion.

The cost headwinds, which totaled $800 million including capacity expansions during the latest quarter, will continue into the second quarter.

“For the peak season ahead, service remains our focus and we are making investments in resources and capacity to meet our customer’s needs,” Subramaniam said.

FedEx expects package volume to rise during the holiday rush even after it notched record deliveries during last year’s peak season, said Brie Carere, chief marketing officer, on a conference call with analysts. FedEx is predicting the industry will see 101 million daily e-commerce packages in the U.S. by calendar year 2022, down from a June forecast of 107 million per day, as shoppers return to stores and consumers spend more on services.

“Despite this moderate change in e-commerce growth, the secular trend of e-commerce growing as a percentage of retail will continue to drive healthy parcel market growth,” Carere said.

The parcel market is expected to expand 10% annually through 2026, she said. FedEx during the quarter had to constrain volumes to keep service levels from declining. Average daily package volume in the first quarter unexpectedly fell slightly from a year earlier at both the Express and Ground units as “continued supply-chain disruptions have slowed U.S. domestic parcel demand compared to the company’s earlier forecast.”

The company said it couldn’t hire enough workers to keep up with demand, a dynamic that pushed up wages for some hub workers by more than 25% from a year earlier.

“The labor availability challenges are likely to continue to pressure profitability over the next several quarter as the Covid-19 pandemic continues to impact the labor market,” said Matt Arnold, an analyst with Edward Jones, in a note to clients.

Pressured Margins

FedEx’s profit margins have come under pressure as residential deliveries driven by online shopping have grown faster than commercial service. The latter has higher yields because more packages are left at one location and less driving is required between stops. FedEx Chief Executive Officer Fred Smith had taken steps to bolster profit, including moving to seven-day service and embracing large packages. The shares have declined 2.9% this year through Tuesday’s close in New York while the Standard & Poor’s 500 Index has risen 16%.

Still, the pandemic has given FedEx a boost, with robust e-commerce uptake allowing the courier to raise prices and focus on higher-margin packages from small shippers. The Express unit has also benefited from running its planes more full as international commercial flights, which also carry cargo, haven’t yet recovered. The company said on Monday that it will increase prices 5.9% in January, after years of increases of 4.9% or less. The company already announced significant surcharges for the holiday package rush.

FedEx’s quarterly revenue was $22 billion, slightly above the $21.9 billion analysts estimated. During the quarter, revenue per package rose 15% for the Express unit and climbed 10% for the Ground unit. FedEx’s Freight unit saw both volume and yield increase, helping the unit increase operating margins to 17.3% from 15% a year earlier.

FedEx expects revenue in the current fiscal year to top $90 billion and adjusted free cash flow is predicted to be more than $3 billion, executives said on the call.

(Adds e-commerce growth in eighth paragraph, analyst comment in 12th.)

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