The Wall Street Journal reports this week that requests to expunge criminal records are on the rise in this tough economy.

In Michigan, state police estimate they’ll set aside 46% more convictions this year than last. Oregon is on track to set aside 33% more. Florida sealed and expunged nearly 15,000 criminal records in the fiscal year ended June 30, up 43% from the previous year. The courts of Cook County, which includes Chicago and nearby suburbs, received about 7,600 expungement requests in the year’s first three quarters, nearly double the pace from the year before.

The criminological commentary…

The increase comes as unemployment has risen above 10%, allowing potential employers to be choosier than they have been in decades. More Americans have criminal records now, criminologists say, in part because a generation has come of age since the start of the war on drugs.

And…

In 1967, 50% of American men had been arrested. Since then, arrests made in connection with domestic violence and illegal drugs have pushed the number to 60%, estimates Alfred Blumstein, a criminologist at Carnegie Mellon University. The annual number of arrests for possession of marijuana more than tripled to 1.8 million from 1980 to 2007, according to the U.S. Department of Justice.

But is expungement a cure-all for those with a record? Maybe not, given ease of access to such information via the Internet for would-be employers:

Expungement doesn’t wipe away all traces. Local news Web sites routinely post arrest mug shots, which are nearly impossible to eradicate from the Internet. Search engines can turn up a smattering of decades-old news and police reports, plus caches of newer ones. Arrests that have been legally expunged may remain on databases that data-harvesting companies offer to prospective employers; such background companies are under no legal obligation to erase them.