<SUBMISSION>
<ACCESSION-NUMBER>0000950129-08-004768
<TYPE>S-8
<PUBLIC-DOCUMENT-COUNT>3
<FILING-DATE>20080908
<DATE-OF-FILING-DATE-CHANGE>20080908
<EFFECTIVENESS-DATE>20080908
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>WASTE MANAGEMENT INC
<CIK>0000823768
<ASSIGNED-SIC>4953
<IRS-NUMBER>731309529
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>S-8
<ACT>33
<FILE-NUMBER>333-153363
<FILM-NUMBER>081060378
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>1001 FANNIN STREET
<STREET2>STE 4000
<CITY>HOUSTON
<STATE>TX
<ZIP>77002
<PHONE>7135126200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1001 FANNIN STREET
<STREET2>SUITE 4000
<CITY>HOUSTON
<STATE>TX
<ZIP>77002
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>USA WASTE SERVICES INC
<DATE-CHANGED>19920703
</FORMER-COMPANY>
</FILER>
<DOCUMENT>
<TYPE>S-8
<SEQUENCE>1
<FILENAME>h60196sv8.htm
<DESCRIPTION>FORM S-8 - REGISTRATION STATEMENT
<TEXT>
<HTML>
<HEAD>
<TITLE>sv8</TITLE>
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<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>As filed with the Securities and Exchange Commission on September&nbsp;8, 2008</B>
</DIV>


<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><B>Registration No.&nbsp;333-</B>
</DIV>


<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>




<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM S-8</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>REGISTRATION STATEMENT<BR>
UNDER THE SECURITIES ACT OF 1933</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>WASTE MANAGEMENT, INC.</B>
</DIV>

<DIV align="center" style="font-size: 10pt">(Exact name of Registrant as specified in its charter)</DIV>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="48%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="48%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top"><B>Delaware</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>73-1309529</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">(State or other jurisdiction of incorporation or organization)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(I.R.S. Employer Identification Number)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>1001 Fannin Street<BR>
Suite&nbsp;4000<BR>
Houston, Texas 77001<BR>
(713)&nbsp;512-6200</B><BR>
(Address, including zip code, and telephone number, including area code of Registrant&#146;s principal executive offices)
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>WASTE MANAGEMENT RETIREMENT SAVINGS PLAN<BR>
WASTE MANAGEMENT RETIREMENT SAVINGS PLAN FOR BARGAINING UNIT EMPLOYEES</B><BR>
(Full titles of the Plans)
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>Rick L. Wittenbraker<BR>
Waste Management, Inc.<BR>
1001 Fannin Street<BR>
Suite&nbsp;4000<BR>
Houston, Texas 77002<BR>
(713)&nbsp;512-6200</B><BR>
(Name, address, including zip code, and telephone number, including area code, of agent for service)
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>CALCULATION OF REGISTRATION FEE</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="1%">&nbsp;</TD>
    <TD width="54%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="23" style="border-bottom: 3px double #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="left"><B>Title of securities</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Amount to be</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Proposed maximum</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Proposed maximum</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Amount of</B></TD>
    <TD>&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="left"><B>to be registered</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>registered</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>offering price per share</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>aggregate offering price</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>registration fee</B></TD>
    <TD>&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
                    <TD style="border-top: 2px solid #000000"><DIV style="margin-left:15px; text-indent:-15px">Common Stock, par value $0.01 per share</DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="left" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 2px solid #000000">2,500,000</TD>
    <TD nowrap style="border-top: 2px solid #000000">(1)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="left" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">34.49</TD>
    <TD nowrap style="border-top: 2px solid #000000">(2)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="left" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">86,225,000</TD>
    <TD nowrap style="border-top: 2px solid #000000">(3)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="left" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">3,388.64</TD>
    <TD nowrap style="border-top: 2px solid #000000">(3)</TD>
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="23" style="border-top: 3px double #000000">&nbsp;</TD>
</TR>

<!-- End Table Body -->
</TABLE>
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left">(1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Pursuant to Rule&nbsp;416(c), this Registration Statement covers an indeterminate amount of
interests to be offered or sold pursuant to the Waste Management Retirement Savings Plan (the
&#147;Plan&#148;).</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left">(2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Represents the average of the high and low prices of the Common Stock as reported on the New
York Stock Exchange on September&nbsp;5, 2008.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left">(3)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Computed in accordance with Rules 457(c) and (h)&nbsp;under the Securities Act of 1933, as
amended, solely for the purpose of calculating the total registration fee. The aggregate
offering price and amount of registration fee have been computed based on the average of the
high and low prices of Common Stock as reported on the New York Stock Exchange on September&nbsp;5,
2008.</TD>
</TR>

</TABLE>
</DIV>

<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>






<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<P><HR noshade><P>

<DIV style="font-family: 'Times New Roman',Times,serif">




<!-- TOC -->
<A name="toc"><DIV align="CENTER" style="page-break-before:always"><U><B>TABLE OF CONTENTS</B></U></DIV></A>

<P><CENTER>
<TABLE border="0" width="90%" cellpadding="0" cellspacing="0">
<TR>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="76%"></TD>
</TR>
<TR><TD colspan="9"><A HREF="#000">Part I</A></TD></TR>
<TR><TD colspan="9"><A HREF="#001">INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</A></TD></TR>
<TR><TD colspan="9"><A HREF="#002">Item&nbsp;1. Plan Information. *</A></TD></TR>
<TR><TD colspan="9"><A HREF="#003">Item&nbsp;2. Registrant Information and Employee Plan Annual Information. *</A></TD></TR>
<TR><TD colspan="9"><A HREF="#004">Part II</A></TD></TR>
<TR><TD colspan="9"><A HREF="#005">INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</A></TD></TR>
<TR><TD colspan="9"><A HREF="#006">Item&nbsp;3. Incorporation of Documents by Reference.</A></TD></TR>
<TR><TD colspan="9"><A HREF="#007">Item&nbsp;4. Description of Securities.</A></TD></TR>
<TR><TD colspan="9"><A HREF="#008">Item&nbsp;5. Interests of Named Experts and Counsel.</A></TD></TR>
<TR><TD colspan="9"><A HREF="#009">Item&nbsp;6. Indemnification of Directors and Officers.</A></TD></TR>
<TR><TD colspan="9"><A HREF="#010">Item&nbsp;7. Exemption from Registration Claimed.</A></TD></TR>
<TR><TD colspan="9"><A HREF="#011">Item&nbsp;8. Exhibits.</A></TD></TR>
<TR><TD colspan="9"><A HREF="#012">Item&nbsp;9. Undertakings.</A></TD></TR>
<TR><TD colspan="9"><A HREF="#013">POWER OF ATTORNEY</A></TD></TR>
<TR><TD colspan="9"><A HREF="#014">SIGNATURES</A></TD></TR>
<TR><TD colspan="9"><A HREF="#015">INDEX TO EXHIBITS</A></TD></TR>
<TR><TD colspan="9"><A HREF="h60196exv5w1.htm">Opinion of Amanda K. Maki, Senior Counsel</A></TD></TR>
<TR><TD colspan="9"><A HREF="h60196exv23w1.htm">Consent of Ernst & Young, LLP</A></TD></TR>
</TABLE>
</CENTER>
<!-- /TOC -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>




<!-- link1 "Part I" -->
<DIV align="left"><A NAME="000"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>Part I</B>
</DIV>

<!-- link1 "INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS" -->
<DIV align="left"><A NAME="001"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</B>
</DIV>

<!-- link1 "Item&nbsp;1. Plan Information. *" -->
<DIV align="left"><A NAME="002"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;1. Plan Information. *</B>
</DIV>

<!-- link1 "Item&nbsp;2. Registrant Information and Employee Plan Annual Information. *" -->
<DIV align="left"><A NAME="003"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;2. Registrant Information and Employee Plan Annual Information. *</B>
</DIV>



<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left">*</TD>
    <TD>&nbsp;</TD>
    <TD>Information required by Part&nbsp;I to be contained in the Section 10(a) prospectus is omitted from
this Registration Statement in accordance with Rule&nbsp;428 under the Securities Act of 1933, as
amended, and the &#147;Note&#148; to Part&nbsp;I of Form S-8.<BR></TD>
</TR>

</TABLE>


<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">





<!-- link1 "Part II" -->
<DIV align="left"><A NAME="004"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>Part II</B>
</DIV>

<!-- link1 "INFORMATION REQUIRED IN THE REGISTRATION STATEMENT" -->
<DIV align="left"><A NAME="005"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>
</DIV>

<!-- link1 "Item&nbsp;3. Incorporation of Documents by Reference." -->
<DIV align="left"><A NAME="006"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;3. Incorporation of Documents by Reference.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents filed with the Securities and Exchange Commission (the &#147;Commission&#148;)
by the Registrant are hereby incorporated by reference into this Registration Statement:
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(a)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Annual Report on Form 10-K for the fiscal year ended December&nbsp;31, 2007.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(b)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Quarterly Report on Form 10-Q for the quarter ended March&nbsp;31, 2008.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(c)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Quarterly Report on Form 10-Q for the quarter ended June&nbsp;30, 2008.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(d)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The description of the Registrant&#146;s Common Stock contained in the Registrant&#146;s
Registration Statement on Form 8-A filed with the Commission pursuant to Section&nbsp;12 of
the Securities Exchange Act of 1934, as amended (the &#147;Exchange Act&#148;), on July&nbsp;1, 1993,
as amended on Form 8-B filed with the Commission on July&nbsp;13, 1995.</TD>
</TR>

</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Plans&#146; Annual Reports on Form 11-K for the fiscal year ended December&nbsp;31, 2007 as filed
with the Commission are also hereby incorporated by reference into this Registration Statement.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All documents subsequently filed by the Registrant and the Plans pursuant to Sections&nbsp;13(a),
13(c), 14 and 15(d) of the Securities Exchange Act of 1934, prior to the filing of a post-effective
amendment which indicates that all of the securities offered hereby have been sold or which
deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference
in this Registration Statement and to be a part hereof from the date of filing of such documents.
</DIV>
<!-- link1 "Item&nbsp;4. Description of Securities." -->
<DIV align="left"><A NAME="007"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;4. Description of Securities.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The class of securities to be offered under this Registration Statement is registered under
Section&nbsp;12 of the Exchange Act.
</DIV>
<!-- link1 "Item&nbsp;5. Interests of Named Experts and Counsel." -->
<DIV align="left"><A NAME="008"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;5. Interests of Named Experts and Counsel.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;None.
</DIV>
<!-- link1 "Item&nbsp;6. Indemnification of Directors and Officers." -->
<DIV align="left"><A NAME="009"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;6. Indemnification of Directors and Officers.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;145 of the Delaware General Corporation Law (the &#147;DGCL&#148;) makes provision for the
indemnification of officers and directors of corporations in terms sufficiently broad to indemnify
the officers and directors of the Registrant under certain circumstances from liabilities
(including reimbursement of expenses incurred) arising under the Securities Act. Section&nbsp;102(b)(7)
of the DGCL permits a corporation to provide in its certificate of incorporation that a director of
the corporation shall not be personally liable to the corporation or its stockholders for monetary
damages for breach of fiduciary duty as a director, except for liability (i)&nbsp;for any breach of the
director&#146;s duty of loyalty to the corporation or its stockholders, (ii)&nbsp;for acts or omissions not
in good faith or which involve intentional misconduct or a knowing violation of law, (iii)&nbsp;in
respect of certain unlawful dividend payments or stock redemptions or repurchases, or (iv)&nbsp;for any
transaction from which the director derived an improper personal benefit.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As permitted by the DGCL, the Registrant&#146;s certificate of incorporation provides that, to the
fullest extent permitted by the DGCL or decisional law, no director shall be personally liable to
the Registrant or to its stockholders for monetary damages for breach of his fiduciary duty as a
director. The effect of this provision in the certificate of
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->II-1<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">incorporation is to eliminate the rights of the Registrant and its stockholders (through
stockholders&#146; derivative suits on behalf of the Registrant) to recover monetary damages against a
director for breach of fiduciary duty as a director thereof (including breaches resulting from
negligent or grossly negligent behavior) except in the situations described in clauses (i)-(iv),
inclusive, above. These provisions will not alter the liability of directors under federal
securities laws.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant&#146;s bylaws (the &#147;bylaws&#148;) provide that the Registrant shall indemnify any person
who was or is a party or is threatened to be made a party to any threatened, pending or completed
action, suit or other proceeding, whether civil, criminal, administrative or investigative by
reason of the fact that he is or was a director or officer, against all expenses, liability and
loss (including attorneys&#146; fees, judgments, fines, and amounts paid or to be paid in settlement)
reasonably incurred, to the fullest extent authorized by the DGCL, provided that the Registrant
shall indemnify such person in connection with any such action, suit or proceeding initiated by
such person only if authorized by the Board of Directors of the Registrant or brought to enforce
certain indemnification rights.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The bylaws also provide that expenses incurred by an officer or director of the Registrant
(acting in his capacity as such) in defending any such action, suit or proceeding shall be paid by
the Registrant, provided that if required by the DGCL such expenses shall be advanced only upon
delivery to the Registrant of an undertaking by or on behalf of such director or officer to repay
such amount if it shall ultimately be determined that he is not entitled to be indemnified by the
Registrant.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The bylaws also provide that indemnification provided for in the bylaws shall not be deemed
exclusive of any other rights to which the indemnified party may be entitled; that any right of
indemnification or protection provided under the bylaws shall not be adversely affected by any
amendment, repeal, or modification of the bylaws; and that the Registrant may purchase and maintain
insurance to protect itself and any such person against any such expenses, liability and loss,
whether or not the Registrant would have the power to indemnify such person against such expenses,
liability or loss under the DGCL or the bylaws.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In addition to the above, the Registrant has entered into indemnification agreements with each
of its directors and certain of its officers. The indemnification agreements provide directors and
officers with the same indemnification by the Registrant as described above and assure directors
and officers that indemnification will continue to be provided despite future changes in the bylaws
of the Registrant. The Registrant also provides indemnity insurance pursuant to which officers and
directors are indemnified or insured against liability or loss under certain circumstances, which
may include liability or related loss under the Securities Act and the Exchange Act.
</DIV>
<!-- link1 "Item&nbsp;7. Exemption from Registration Claimed." -->
<DIV align="left"><A NAME="010"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;7. Exemption from Registration Claimed.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;None.
</DIV>
<!-- link1 "Item&nbsp;8. Exhibits." -->
<DIV align="left"><A NAME="011"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;8. Exhibits.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following exhibits are filed as part of this Registration Statement:
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="0%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="0%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="96%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">4.1</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">-
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Restated Certificate of Incorporation (Incorporated by reference to Exhibit&nbsp;3.1 to
the Registrant&#146;s Quarterly Report on Form&nbsp;10-Q for the Quarter ended June&nbsp;30,
2002).</DIV></TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">4.2</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">-
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Bylaws (Incorporated by reference to Exhibit&nbsp;3.2 to the Registrant&#146;s Current
Report on Form&nbsp;8-K dated March&nbsp;1, 2007).</DIV></TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">5.1</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">-
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Opinion of Amanda K. Maki, Senior Counsel &#151; Corporate &#038; Securities of the
Registrant, regarding the legality of the shares of Common Stock being registered
hereunder.</DIV></TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">23.1</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">-
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Consent of Ernst &#038; Young, LLP.</DIV></TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">24.1</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">-
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Powers of Attorney (included on the signature page of this Registration Statement).</DIV></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant hereby undertakes that it will submit or has submitted the Plans and any
amendment thereto to the Internal Revenue Service (the &#147;IRS&#148;) in a timely manner and has made or
will make all changes required by the IRS in order to qualify the Plans.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->II-2<!-- /Folio -->
</DIV>

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<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link1 "Item&nbsp;9. Undertakings." -->
<DIV align="left"><A NAME="012"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;9. Undertakings.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;The undersigned Registrant hereby undertakes:
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To file, during any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement:</TD>
</TR>

</TABLE>
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(i)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>to include any prospectus required by Section&nbsp;10(a)(3) of the
Securities Act of 1933, as amended (the &#147;Securities Act&#148;);</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(ii)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>to reflect in the prospectus any facts or events arising after the
effective date of the Registration Statement (or the most recent post-effective
amendment thereof) which, individually or in the aggregate, represent a fundamental
change in the information set forth in the Registration Statement; and</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(iii)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>to include any material information with respect to the plan of
distribution not previously disclosed in the Registration Statement or any material
change to such information in the Registration Statement.</TD>
</TR>

</TABLE>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">Provided, however, that the undertakings set forth in paragraphs (a)(1)(i) and (a)(1)(ii) do
not apply if the information required to be included in a post-effective amendment by those
paragraphs is contained in periodic reports filed by the Registrant pursuant to Section&nbsp;13
or Section 15(d) of the Exchange Act that are incorporated by reference in this Registration
Statement.
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>That, for the purpose of determining any liability under the Securities Act,
each such post-effective amendment shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities at that
time shall be deemed to be the initial bona fide offering thereof; and</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(3)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To remove from registration by means of a post-effective amendment any of the
securities being registered that remain unsold at the termination of the offering.</TD>
</TR>

</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;The undersigned Registrant hereby further undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the Registrant&#146;s annual report pursuant to
Section 13(a) or 15(d) of the Exchange Act that is incorporated by reference in the Registration
Statement shall be deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;Insofar as indemnification for liabilities arising under the Securities Act may be
permitted to directors, officers and controlling persons of the Registrant pursuant to the
foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the
Commission such indemnification is against public policy as expressed in the Securities Act and is,
therefore, unenforceable. In the event that a claim for indemnification against such liabilities
(other than the payment by the Registrant of expenses incurred or paid by a director, officer or
controlling person of the Registrant in the successful defense of any action, suit or proceeding)
is asserted by such director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter has been settled
by controlling precedent, submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Securities Act and will be
governed by the final adjudication of such issue.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->II-3<!-- /Folio -->
</DIV>

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<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<!-- link1 "POWER OF ATTORNEY" -->
<DIV align="left"><A NAME="013"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>POWER OF ATTORNEY</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Know all men by these presents, that each person whose signature appears below constitutes and
appoints David P. Steiner, Robert G. Simpson, Rick L. Wittenbraker, and each of them, each of whom
may act without joinder of the other, his true and lawful attorneys-in-fact and agents, with full
power of substitution and resubstitution, for him and in his name, place and stead, in any and all
capacities, to sign any or all pre- or post-effective amendments to this Registration Statement,
including without limitation any registration statement of the type contemplated by Rule 462(b)
under the Securities Act of 1933, as amended, and to file the same, with all exhibits thereto and
other documents in connection therewith, with the Securities and Exchange Commission, granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to do and perform
each and every act and thing requisite and necessary to be done in and about the premises, as fully
to all intents and purposes as he might or could do in person, hereby ratifying and confirming all
that said attorneys-in-fact and agents, and each of them, or substitute or substitutes of any or
all of them, may lawfully do or cause to be done by virtue hereof.
</DIV>

<!-- link1 "SIGNATURES" -->
<DIV align="left"><A NAME="014"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it
has reasonable grounds to believe that it meets all requirements for filing on Form S-8 and has
duly caused this Registration Statement on Form S-8 to be signed on its behalf by the undersigned,
thereunto duly authorized, in the City of Houston, State of Texas on the 8th day of September&nbsp;2008.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left"><B>WASTE MANAGEMENT, INC.</B><BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/ David P. Steiner
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">By:             David P. Steiner&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Chief Executive Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, this Registration Statement on
Form S-8 has been signed by the following persons in the capacities indicated on the 8th day of
September&nbsp;2008.
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="45%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
    <TD width="45%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Signature</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Title</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ David P. Steiner
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
David P. Steiner
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Chief Executive Officer<BR>
(Principal Executive Officer)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Robert G. Simpson
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Robert G. Simpson
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Senior Vice President and Chief Financial Officer<BR>
(Principal Financial Officer)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Greg A. Robertson
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Greg A. Robertson
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Vice President and Chief Accounting Officer<BR>
(Principal Accounting Officer)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->II-4<!-- /Folio -->
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="45%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
    <TD width="45%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Pastora San Juan Cafferty
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Pastora San Juan Cafferty
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Frank M. Clark, Jr.
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Frank M. Clark, Jr.
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Patrick W. Gross
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Patrick W. Gross
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ John C. Pope
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
John C. Pope
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director and Chairman of the Board</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Steven G. Rothmeier
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Steven G. Rothmeier
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ W. Robert Reum
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
W. Robert Reum
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Thomas H. Weidemeyer
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Thomas H. Weidemeyer
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Director</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->II-5<!-- /Folio -->
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, the Administrative Committee of
the Waste Management Employee Benefit Plans has duly caused this Registration Statement to be
signed on its behalf by the undersigned, thereunto duly authorized, in the City of Houston, the
State of Texas, on this 8th day of September&nbsp;2008.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">WASTE MANAGEMENT RETIREMENT SAVINGS PLAN
</DIV>


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    <TD width="1%">&nbsp;</TD>
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    <TD width="15%">&nbsp;</TD>
    <TD width="48%">&nbsp;</TD>
</TR>
<TR>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top" align="left">&nbsp;</TD>
</TR><TR>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">     /s/ Krista DelSota
&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">&nbsp;</TD>
</TR><TR>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Krista DelSota&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">&nbsp;</TD>
</TR><TR>
    <TD>&nbsp;</TD>
    <TD colspan="4" align="left">Vice President -- Compensation, Benefits and HRIM<BR>
Waste Management, Inc.<BR><BR>
Member -- Administrative Committee of the Waste Management Employee Benefit Plans&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">&nbsp;</TD>
</TR>

</TABLE>

<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
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<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

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<!-- link1 "INDEX TO EXHIBITS" -->
<DIV align="left"><A NAME="015"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><U><B>INDEX TO EXHIBITS</B></U>
</DIV>

<DIV align="center">
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    <TD width="0%">&nbsp;</TD>
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    <TD width="96%">&nbsp;</TD>
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<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">4.1</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">-
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Restated Certificate of Incorporation (Incorporated by reference to Exhibit&nbsp;3.1 to
the Registrant&#146;s Quarterly Report on Form&nbsp;10-Q for the Quarter ended June&nbsp;30,
2002).</DIV></TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">4.2</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">-
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Bylaws (Incorporated by reference to Exhibit&nbsp;3.2 to the Registrant&#146;s Current
Report on Form&nbsp;8-K dated March&nbsp;1, 2007).</DIV></TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">5.1</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">-
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Opinion of Amanda K. Maki, Senior Counsel &#151; Corporate &#038; Securities of the
Registrant, regarding the legality of the shares of Common Stock being registered
hereunder.</DIV></TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">23.1</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">-
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Consent of Ernst &#038; Young LLP.</DIV></TD>
</TR>
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    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">24.1</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">-
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Powers of Attorney (included on the signature page of this Registration Statement).</DIV></TD>
</TR>
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<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>h60196exv5w1.htm
<DESCRIPTION>OPINION OF AMANDA K. MAKI, SENIOR COUNSEL
<TEXT>
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<TITLE>exv5w1</TITLE>
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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="right" style="font-size: 10pt; margin-top: 12pt">Exhibit&nbsp;5.1
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt">&#091;WASTE MANAGEMENT, INC. LETTERHEAD&#093;
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt">September&nbsp;8, 2008
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Waste Management, Inc.<BR>
1001 Fannin St., Suite&nbsp;4000<BR>
Houston, Texas 77002

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Ladies and Gentlemen:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I am Senior Counsel &#151; Corporate &#038; Securities of Waste Management, Inc. (the &#147;Company&#148;) and I
have acted as counsel for the Company in connection with the preparation of the Registration
Statement on Form S-8 to be filed by the Company with the Securities and Exchange Commission for
the registration under the Securities Act of 1933, as amended, of 2.5&nbsp;million shares of the
Company&#146;s common stock, par value $0.01 per share (the &#147;Shares&#148;), which are to be issued from time
to time to certain participants in the Waste Management Retirement Savings Plan and the Waste
Management Retirement Savings Plan for Bargaining Unit Employees (the &#147;Plans&#148;).
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I have examined the originals, certified copies or copies otherwise identified to my
satisfaction as being true copies of the Plans and such other documents as I have deemed necessary
or appropriate for purposes of this opinion.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Based on the foregoing, I am of the opinion that the Shares have been duly and validly
authorized and reserved for issuance, and that the Shares, when issued under the terms of the
Plans, will be legally and validly issued, fully paid and nonassessable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I hereby consent to the filing of this opinion as Exhibit&nbsp;5.1 to the Registration Statement.
</DIV>

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    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
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    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Very truly yours,<BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">/s/ Amanda K. Maki
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Amanda K. Maki&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

</TABLE>

<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
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<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>h60196exv23w1.htm
<DESCRIPTION>CONSENT OF ERNST & YOUNG, LLP
<TEXT>
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<TITLE>exv23w1</TITLE>
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<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>

</TABLE>

<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><B>EXHIBIT 23.1</B>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</B>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">We consent to the incorporation by reference in the Registration Statement on Form S-8 to be filed
on September&nbsp;8, 2008 pertaining to the Waste Management Retirement Savings Plan for Bargaining Unit
Employees and the Waste Management Retirement Savings Plan of our reports (a)&nbsp;dated February&nbsp;18,
2008, with respect to the consolidated financial statements and schedule of Waste Management, Inc.,
and the effectiveness of internal control over financial reporting of Waste Management, Inc.,
included in its Annual Report (Form 10-K), and (b)&nbsp;dated June&nbsp;30, 2008, with respect to the
financial statements and supplemental schedule of the Waste Management Retirement Savings Plan for
Bargaining Unit Employees and the Waste Management Retirement Savings Plan included in the Plans&#146;
Annual Reports (Forms 11-K), for the year ended December&nbsp;31, 2007, filed with the Securities and
Exchange Commission.
</DIV>


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    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">                                       /s/ Ernst &#038; Young LLP
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">ERNST &#038; YOUNG LLP&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Houston, Texas<BR>
September&nbsp;5, 2008
</DIV>



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