WASHINGTON - The U.S. unemployment rate jumped to 5.5 per cent in May -- the biggest monthly rise since 1986 -- as nervous employers cut 49,000 jobs.

The latest snapshot of business conditions showed a deeply troubled economy, with dwindling job opportunities in a time of continuing hardship in the housing, credit and financial sectors.

With employers worried about a sharp slowdown and their own prospects, they clamped down on hiring in May, said Friday's report from the Labor Department. The unemployment rate soared from five per cent in April to 5.5 per cent in May. That was the biggest one-month jump in the rate since February 1986. The increase left the jobless rate at its highest since October 2004.

The big jump in the unemployment rate surprised economists who were forecasting a tick-up to 5.1 per cent. Payroll losses, however, weren't as deep as the 60,000 that analysts were bracing for. Still, job losses in both March and April turned out to be larger than the government previously reported. Employers now have cut payrolls for five straight months.

The 5.5 per cent rate is relatively moderate judged by historical standards. Yet, there was no question that employers last month sharply cut jobs in manufacturing, construction, retailing and professional and businesses services. Those losses swamped gains elsewhere, including in the education and health fields, government and leisure and hospitality.

The government said the number of unemployed people grew by 861,000 in May -- rising to 8.5 million. The over-the-month jump in unemployment reflected more workers losing their jobs as well as an increase in those coming into the job market to look for work, the Bureau of Labor Statistics said.

A year ago, the number of unemployed stood at 6.9 million and the jobless rate was 4.5 per cent.

A trio of crises -- housing, credit and financial -- have rocked the economy. That's caused economic growth to slow to a crawl as businesses and consumers have tightened their belts. Spiraling energy costs are another negative force.

The country's economic problems are a top concern for voters -- and thus for President Bush, legislators on Capitol Hill and those vying to win the White House this fall.

So far this year, the government said, job losses have totaled 324,000.

Workers with jobs, however, saw modest gains.

Average hourly earnings for jobholders rose to $17.94 in May, up 0.3 per cent from the previous month. Economists were forecasting a 0.2 per cent gain. Over the last 12 months, wages have grown by 3.5 per cent. .

With food and energy prices marching upward, paycheque aren't stretching as far. Although tax rebates helped to energize shoppers and give major retailers better sales in May, analysts still believe that anxious consumers will be keeping a close watch on their purchases and their budgets in the months ahead.

Worried about inflation, Federal Reserve Chairman Ben Bernanke has signalled that the central bank's rate-cutting campaign, which commenced last September to help bolster the economy, is probably over for now.

Fed officials and the Bush administration are hoping that the Fed's powerful doses of rate reductions and the government's $168 billion stimulus package, including tax rebates for people and tax breaks for businesses, will pull the economy out of its deep funk in the second half of this year.

Even if that happens, the unemployment rate is expected to climb to six per cent or higher early next year. Employers won't want to ramp up hiring until they feel more sure that an economic recovery has strong legs.