Packaging Corporation of America (NYSE: PKG), will hold a conference call on Tuesday, October 21, 2008 at 10:00 a.m. (Eastern Time) to discuss third quarter 2008 results. Third quarter 2008 earnings will be released after the market closes on October 20, 2008.

For access to the conference call on October 21st, please dial (866) 847-7864 (U.S. and Canada) and (703) 639-1430 (International) by 9:45 a.m. (Eastern Time). The conference call leader will be Paul Stecko.

A replay of the call will also be available from 1:00 p.m. (Eastern Time) on October 21, 2008 until 11:59 p.m. (Eastern Time) on November 4, 2008. To access the recording, please dial (888) 266-2081 (U.S. and Canada) and (703) 925-2533 (International). The passcode is 1292018.

This call will be webcast by CCBN and can be accessed at PCA’s website at: www.packagingcorp.com.

PCA is the fifth largest producer of containerboard and corrugated packaging products in the United States with sales of $2.3 billion in 2007. PCA operates four paper mills and 67 corrugated product plants in 26 states across the country.

Packaging Corporation of America
Barbara Sessions
INVESTOR RELATIONS: (877) 454-2509
PCA Web Site: www.packagingcorp.com