I couldn't actually locate a category for "Business" Reporting, but did find the
award for journalism covered business related topics:

"JOURNALISM:
Public Service: The Las Vegas Sun, notably Alexandra Berzon, for exposing the high death rate among construction workers on the Las Vegas Strip.

Finalists: The New York Times for coverage of the economic meltdown of 2008; the St. Petersburg Times for PolitiFact, its fact-checking initiative during the 2008 presidential campaign."
http://www.huffingtonpost.com/2009/04/20/pulitzer-prize-2009-winne_n_189112.html

Can see entire list of winners here:

http://www.pulitzer.org/awards/2009

here's what mine looks like:

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