The biggest risk of recession comes from the credit crisis that emerged last year as home values began to tumble and the number of mortgage defaults and foreclosures soared, the economist said.
Major financial institutions were racked by credit losses as the value of securities backed by mortgages sank, causing the traditional outlet through which banks borrow money to seize up.
The credit woes have deepened the housing slump, making it harder for would-be homeowners to borrow money and for homeowners to refinance. But consumer spending, while weakened, hasn't declined severely due to credit problems, Leamer notes.
"Americans are not as wealthy as they thought they were, and that's going to factor into consumer spending going forward, but it doesn't cause a recession because consumers all realize their lack of wealth at different points in time," he said.
Another potential factor in a recession would be widespread job losses. Leamer, who has maintained a no-recession forecast in recent quarters, said that's not likely.
"So far the labor markets are slowing but not collapsing," he said.
The forecast calls for the nation's housing doldrums to continue "for a long time," Leamer said.
He expects housing starts, which fell from a high of 2.3 million units in January 2006 to 1 million units this January, to bottom out in the summer.