HOUSTON--(BUSINESS WIRE)--Nov. 8, 2005--Waste Management, Inc. (NYSE:WMI) will announce fourth quarter 2005 earnings on Tuesday, February 14, 2006, before the market opens. A conference call to discuss the results will be held that day at 9 a.m. CT (10 a.m. ET). The full text of the earnings announcement and accompanying financial tables will be available on Waste Management's website, www.WM.com.

Other earnings release dates scheduled for 2006 are:

         Q1 2006 April 27th
         Q2 2006 July 28th
         Q3 2006 October 27th

Waste Management, Inc. also announced today that Company executives currently plan to present at the following investment conferences during the fourth quarter of 2005 and the first quarter of 2006:

  November 29     Friedman Billings Ramsey Investor Conference
  February 16     Lehman Brothers Industrial Select Conference
  March 6         Raymond James Institutional Investor Conference
  March 7         Citigroup Global Industrial Manufacturing Conference

Although these presentations are not expected to include any material non-public information, the Company will post the presentation slides on its website. The slides will be posted some time during the 24-hour period prior to the scheduled presentation time. The slides may be accessed via the Investor Relations section of the Company's corporate website, which is located at www.wm.com. We anticipate that all of these conferences will be web cast and we will post audio links on our website as they are made available to us.

Waste Management, Inc. is its industry's leading provider of comprehensive waste management services. Based in Houston, the Company serves municipal, commercial, industrial and residential customers throughout North America.

    CONTACT: Waste Management, Inc., Houston
             Analysts: Greg Nikkel, 713-265-1358
             or
             Media: Lynn Brown, 713-394-5093
             http://www.WM.com

    SOURCE: Waste Management, Inc.