Chicago, Illinois, USA, 14 January 2009 -- USG Corporation (NYSE: USG), a leading building products company, will hold a conference call and webcast to discuss fourth quarter and full year 2008 results on 28 January 2009, at 11:00 a.m. Eastern Time (10:00 a.m. Central Time).

This call can be accessed at USG's Web site at http://investor.usg.com.

To participate in the call, dial 1-800-315-2944 (USA & Canada). International callers should dial 1-847-413-2929. Participants should call 10 minutes before start time. The passcode is 23599997.

A replay of the webcast will be available on the USG Web site until 06 February 2009. A telephone replay of the call also will be available. The replay dial-in number is 1-888-843-8996 (1-630-652-3044 for international callers), and the passcode is 23599997. The telephonic replay will be available until 06 February 2009.

USG Corporation is a Fortune 500 manufacturer and distributor of high-performance building systems through its United States Gypsum Company, USG Interiors, Inc. and L&W Supply Corporation subsidiaries. Headquartered in Chicago, USG serves the residential and nonresidential construction markets, repair and remodel construction markets, and industrial processes. USG's wall, ceiling, flooring, and roofing products provide leading-edge building solutions for customers, while L&W Supply center locations efficiently stock and deliver building materials nationwide. For additional information, visit the USG Web site at www.usg.com.