Wages are rising in China, heralding the possible end of an era of cheap goods.
For the past 30 years, customers would ask William Fung, the managing director of one of the world's biggest manufacturing-outsourcing companies, to make his products—whether T-shirts, jeans or dishes—cheaper. Thanks to China's seemingly limitless labor force, he usually could.

Now, the head of Li & Fung Ltd. says the times are changing. Wages for the tens of thousands of workers his Hong Kong-based firm indirectly employs are surging: He predicts overall, China's wages will increase 80% over the next five years. That means prices for Li & Fung's goods will have to rise, too.

"What we will have for the next 30 years is inflation," Mr. Fung said. "A lot of Western managers have never coped with inflation."

The issue is likely to hover behind talks Monday, between Chinese and U.S. leaders in Washington at their annual Strategic Economic Dialogue. Currency and debt issues are expected to dominate the agenda. But there are signs that the low labor costs—and cheap currency—that led to China's huge trade surplus with the U.S. could be reaching a tipping point. This comes amid pressure from rising wages as China's working-age population begins to decline.

For decades, plentiful Chinese labor kept down costs of a range of goods bought by Americans. Even as politicians in Washington accused China of hollowing out the American manufacturing sector, cheap DVD players, sweaters and barbecue sets were a silver lining for consumers who grew accustomed to ever-lower prices. China also kept down the value of its currency, giving domestic exporters a competitive edge.

"Inflation has been damped pretty dramatically in the U.S. because it exported work to China and other places at 20% or 30% of the cost," said Hal Sirkin, a consultant at Boston Consulting Group. The years of dramatic reductions in costs are over, the firm says.

Li & Fung traces the start of rising wages to the "Foxconn Effect." Foxconn is the trade name of Hon Hai Precision Industry Co., maker of iPads for Apple Inc., and computers for Hewlett-Packard Co., among others. After a string of worker suicides last year at one of its China plants spurred Foxconn to defend its treatment of employees, the company raised wages 30% or more in a bid to improve worker conditions. That raise came as workers at other factories, including staff at a Honda Motor Co. parts plant, went on strike for higher pay.