Nov. 9 (Bloomberg) -- The U.S. unemployment rate may rise to a post-World War II high of 13 percent in the aftermath of the recession, said David Rosenberg, chief economist at Gluskin Sheff & Associates Inc. in Toronto.

“This is going to be the mother of all jobless recoveries,” Rosenberg said today in an interview on Bloomberg Radio. “At the beginning of the year, who was calling for unemployment to go up to 10 percent?”

Rosenberg said the recession, the deepest since the Great Depression, “is truly secular in nature” and said the economy is “in a post-bubble credit collapse.”

A 13 percent unemployment rate would be the highest since monthly records began in January 1948, according to Labor Department data. The previous postwar high was 10.8 percent in December 1982. Yearly records, which began in 1929, show joblessness climbed to almost 25 percent in 1933 during the Great Depression.

The rate exceeded 10 percent last month for the first time in more than a quarter century. The Labor Department reported Nov. 6 that unemployment increased to 10.2 percent in October, the highest since 1983, and payrolls dropped by 190,000 workers.

Additionally, the so-called under-employment rate, which includes part-time workers who’d prefer a full-time position, and people who want work and have given up looking, reached 17.5 percent last month, the highest level since records began in 1994.

Similar to Japan

The economy in the U.S. could rival Japan’s so-called “lost decade” of the 1990s, Rosenberg said. “This has some prints of Japan in many respects,” where growth stagnated for years and prices fell in the aftermath of speculation in real estate and equities, he said.

In the U.S., “20 percent of private credit is coming out of the system -- and on a semi-permanent basis,” as reflected in the record eight consecutive monthly declines in consumer credit through September, Rosenberg said.

Credit card, auto and other installment debt declined $14.8 billion, or 7.2 percent at an annual rate, to $2.46 trillion, according to Federal Reserve data released Nov. 6. The consecutive declines were the most since records began in 1943.

(In the U.S., hear Bloomberg Radio on satellite radio: Sirius Channel 130 and XM Channel 129. In New York City, tune to WBBR 1130 on the AM dial.)

To contact the reporters on this story: Vincent Del Giudice in Washington vdelgiudice@bloomberg.net; Thomas R. Keene in New York tkeene@bloomberg.net.

Last Updated: November 9, 2009 09:22 EST