(Adds Beige Book, updates markets)
* Manufacturing activity picks up in November
* Signs supply constraints easing in a few industries
* Private payrolls increase 534,000
By Lucia Mutikani
WASHINGTON, Dec 1 (Reuters) - U.S. manufacturing activity picked up in November amid strong demand for goods, keeping inflation high as factories continued to struggle with pandemic-related shortages of raw materials.
Signs that the economy was gathering momentum halfway through the fourth quarter were underscored by other data on Wednesday showing private employers maintained a strong pace of hiring last month. But there are fears that the Omicron variant of COVID-19 could hurt demand for services as well as keep the unemployed at home, and hold back job growth and the economy.
"Manufacturing should continue to contribute positively to GDP growth over the next year as businesses replenish inventories and supply-chain issues improve," said Ryan Sweet, a senior economist at Moody's Analytics in West Chester, Pennsylvania. "There are risks, including the potential for businesses overbooking orders now and the Omicron variant magnifying price and supply chain issues."
The Institute for Supply Management (ISM) said its index of national factory activity increased to a reading of 61.1 last month from 60.8 in October.
A reading above 50 indicates expansion in manufacturing, which accounts for 12% of the U.S. economy. Economists polled by Reuters had forecast the index rising to 61.0.
"The U.S. manufacturing sector remains in a demand-driven, supply chain-constrained environment, with some indications of slight labor and supplier delivery improvement," said Timothy Fiore, ISM chair of the manufacturing business survey committee.
Global economies' simultaneous recovery from the COVID-19 pandemic, fueled by trillions of dollars in relief money from governments, has strained supply chains, leaving factories waiting longer to receive raw materials.
The Federal Reserve's Beige Book on Wednesday described economic activity as growing at "a modest to moderate pace" during October and early November, but noted that "growth was constrained by supply chain disruptions and labor shortages."
All of the six largest manufacturing industries in the ISM survey, including computer and electronic products as well as transportation equipment, reported moderate to strong growth.
Makers of computer and electronic products said "international component shortages continue to cause delays in completing customer orders." Transport equipment manufacturers reported "large volume drops due to chip shortage." Furniture producers said "business is strong but meeting customer demand is difficult due to a shortage of raw materials and labor."
But there are some glimmers of hope. Prices for steel plate and hot-rolled coil appear to be nearing a plateau, according to manufacturers of fabricated metal products. Supply of plastic resins is improving, accounts from electrical equipment, appliances and components, as well as plastics and rubber products manufacturers suggested.
The ISM survey's measure of supplier deliveries slipped to 72.2 from 75.6 in October. A reading above 50% indicates slower deliveries.
The long delivery times kept inflation at the factory gate bubbling. The survey's measure of prices paid by manufacturers fell to a still-high 82.4 from 85.7 in October.
Factories are easily passing the increased production costs to consumers and there are no signs yet of resistance.
Fed Chair Jerome Powell told lawmakers on Tuesday that "the risk of higher inflation has increased," adding that the U.S. central bank should consider accelerating the pace of winding down its large-scale bond purchases at its next policy meeting in two weeks.
The Fed's preferred inflation measure surged by the most in nearly 31 years on an annual basis in October.
Stocks on Wall Street rebounded after Tuesday's sell-off. The dollar was steady against a basket of currencies. Prices for longer-dated U.S. Treasury prices rose.
The ISM survey's forward-looking new orders sub-index climbed to 61.5 last month from 59.8 in October. Customer inventories remained depressed.
With demand robust, factories hired more workers. A measure of manufacturing employment rose to a seven-month high.
Strengthening labor market conditions were reinforced by the ADP National employment report on Wednesday showing private payrolls increased by 534,000 jobs in November after rising 570,000 in October. That was broadly in line with expectations.
This, combined with consumers' robust perceptions of the labor market last month suggest job growth accelerated further in November. First-time applications for unemployment benefits declined between mid-October and mid-November.
But a shortage of workers caused by the pandemic is hindering faster job growth. There were 10.4 million job openings at the end of September.
Workers have remained home even as companies have been boosting wages, school reopened for in-person learning and generous federal government-funded benefits ended.
"Overall, the risk remains that renewed health concerns will keep workers, especially those with caregiving responsibilities, from returning to the labor force, preventing a return to pre-pandemic strength," said Rubeela Farooqi, chief U.S. economist at High Frequency Economics in White Plains, New York.
According to a Reuters survey of economists nonfarm payrolls probably increased by 550,000 jobs in November. The economy created 531,000 jobs in October.
The Labor Department is scheduled to publish its closely watched employment report for November on Friday.
(Reporting by Lucia Mutikani; Editing by Chizu Nomiyama and Andrea Ricci)