As a self-employed software engineer, Thomas Sorensen broadcasts his qualifications to potential employers across Europe and the Middle East. But to the ones in his native Denmark, he is simply unavailable.

Settled in Frankfurt, where he handles computer security for a major Swiss corporation, Sorensen, 34, has no plans to return to the days of paying sky-high Danish taxes. Still, an unknowing headhunter does occasionally pass his name to Danish companies.

"When I get an e-mail from them, I either respond negatively but politely," Sorensen said. "Or I don't respond at all."

Young Danes, often schooled abroad and inevitably fluent in English, are primed to quit Denmark for greener pastures. One reason is the income tax rate, which can reach 63 percent.

The Organization for Economic Cooperation and Development, which is based in Paris, projects that Denmark's growth rate will fall to an annual rate of slightly more than 1 percent for the five years beginning in 2009, reflecting a dwindling supply of a vital input for any economy: labor.

The problem, employers and economists believe, has a lot to do with the 63 percent marginal tax rate paid by top earners in Denmark - a level that hits anyone making more than 360,000 Danish kroner, or about $70,000.

The Confederation of Danish Industries estimated in August that the Danish labor force had shrunk by about 19,000 people through the end of 2005, because Danes and others had moved elsewhere.

Full story here.