Extract from the New York Times, Oct. 17:

As it turns out, Joe the Plumber, as he became nationally known when Senator John McCain made him a theme at Wednesday's final presidential debate, may work in the plumbing business, but he is not a licensed plumber.

Thomas Joseph, the business manager of Local 50 of the United Association of Plumbers, Steamfitters and Service Mechanics, based in Toledo, said Thursday that Mr. Wurzelbacher had never held a plumber's license, which is required in Toledo and several surrounding municipalities. He also never completed an apprenticeship and does not belong to the plumber's union, which has endorsed Mr. Obama. On Thursday, he acknowledged that he does plumbing work even though he does not have a license.

His full name is Samuel J. Wurzelbacher. And he owes back taxes, too, public records show. The premise of his complaint to Mr. Obama about taxes may also be flawed, according to tax analysts. Contrary to what Mr. Wurzelbacher asserted and Mr. McCain echoed, neither his personal taxes nor those of the business where he works are likely to rise if Mr. Obama's tax plan were to go into effect, they said.

From the "Toledo Blade":

...Mr. Wurzelbacher said he works under Al Newell's license, but according to Ohio building regulations, he must maintain his own license to do plumbing work.

He is also not registered to operate as a plumber in Ohio, which means he's not a plumber.

Mr. Wurzelbacher said he was hired by Mr. Newell six years ago and that the possibility of him eventually buying the company was discussed during his job interview.

He said it's his understanding he can work under Mr. Newell's license as long as the licensed contractor works on the same site.

Mr. Wurzelbacher said he is working on taking the Ohio plumbing contractors' license test.

Mr. Wurzelbacher's notoriety has raised the ire of Tom Joseph, business manager for Local 50 of the United Association of Plumbers, Steamfitters, and Service Mechanics, who claimed that Mr. Wurzelbacher didn't undergo any apprenticeship training.

"When you have guys going out there with no training whatsoever, it's a little disreputable to start with," Mr. Joseph said. "We're the real Joe the Plumber."

Mr. Joseph said Mr. Wurzelbacher could only legally work in the townships, but not in any municipality in Lucas County or elsewhere in the country.

"This individual has got no schooling, no licenses, he's never been to a training program, union or non-union, in the United States of America," Mr. Joseph said....

The question about buying the business seems to be whether or not he could ever afford to do so. A divorce action in 2004 (it seems to be, or perhaps 2006) showed an income of about $40,000 per year. He does seem to be a registered voter (although his name might be misspelled), according to the Lucas County (Ohio) elections office.