EMCOR Group, Inc. — Major Shareholding Notification 2006

May 10, 2006

SC 13G/A 1 a06-11550_1sc13ga.htm AMENDMENT

UNITED STATES	OMB APPROVAL
SECURITIES AND EXCHANGE COMMISSION	OMB Number: 3235-0145
Washington,
D.C. 20549	Expires: February 28, 2009
SCHEDULE 13G	Estimated average burden hours per response. . 11

*Under the Securities Exchange Act of 1934 (Amendment No. 5)**

*EMCOR Group, Inc.*

(Name of Issuer)

*Common Stock*

(Title of Class of Securities)

*29084Q100*

(CUSIP Number)

*04/30/2006*

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

ý	Rule 13d-1(b)
o	Rule 13d-1(c)
o	Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

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| CUSIP No. 29084Q100 — 1. | Names of Reporting
Persons. I.R.S. Identification Nos. of above persons (entities only) The TCW Group, Inc., on behalf of the TCW Business Unit | |
| --- | --- | --- |
| 2. | Check the Appropriate Box
if a Member of a Group (See Instructions) | |
| | (a) | o |
| | (b) | ý |
| 3. | SEC Use Only | |
| 4. | Citizenship or Place of
Organization Nevada corporation | |
| Number of Shares Beneficially Owned by Each Reporting Person With | 5. | Sole Voting Power 0 |
| | 6. | Shared Voting Power 318,254 |
| | 7. | Sole Dispositive Power 0 |
| | 8. | Shared Dispositive Power 335,464 |
| 9. | Aggregate Amount
Beneficially Owned by Each Reporting Person 335,464 | |
| 10. | Check if the Aggregate
Amount in Row (9) Excludes Certain Shares (See Instructions) o | |
| 11. | Percent of Class
Represented by Amount in Row (9) 1.1%(see response to Item 4) | |
| 12. | Type of Reporting Person
(See Instructions) HC/CO | |

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Item 1.
(a)	Name of Issuer EMCOR Group, Inc.
(b)	Address of Issuer’s
Principal Executive Offices 301 Merritt Seven Corporate Park 6th Floor Norwalk, CT 06851-1060
Item 2.
(a)	Name of Person Filing The TCW Group, Inc., on behalf of the TCW Business Unit
(b)	Address of Principal
Business Office or, if none, Residence 865 South Figueroa Street Los Angeles, CA 90017
(c)	Citizenship (Nevada Corporation)
(d)	Title of Class of
Securities Common Stock
(e)	CUSIP Number 29084Q100

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| Item 3. — (a) | o | Broker or dealer
registered under section 15 of the Act (15 U.S.C. 78o). |
| --- | --- | --- |
| (b) | o | Bank as defined in section
3(a)(6) of the Act (15 U.S.C. 78c). |
| (c) | o | Insurance company as
defined in section 3(a)(19) of the Act (15 U.S.C. 78c). |
| (d) | o | Investment company
registered under section 8 of the Investment Company Act of 1940 (15 U.S.C
80a-8). |
| (e) | o | An investment adviser in
accordance with §240.13d-1(b)(1)(ii)(E); |
| (f) | o | An employee benefit plan
or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F); |
| (g) | ý | A parent holding company
or control person in accordance with § 240.13d-1(b)(1)(ii)(G); |
| | | (see Item 7) The TCW Group, Inc., on behalf of the TCW Business Unit |
| (h) | o | A savings associations as
defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C.
1813); |
| (i) | o | A church plan that is
excluded from the definition of an investment company under section 3(c)(14)
of the Investment Company Act of 1940 (15 U.S.C. 80a-3); |
| (j) | o | Group, in accordance with
§240.13d-1(b)(1)(ii)(J). |
| If this statement is filed
pursuant to Rule 13d-1(c), check this box. o | | |

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Item 4.
Provide the following
information regarding the aggregate number and percentage of the class of
securities of the issuer identified in Item 1.
The TCW Group, Inc., on
behalf of the Business Unit ***
(a)	Amount beneficially
owned: 335,464
(b)	Percent of class: 1.1%
(c)	Number of shares as to
which the person has:
	(i)	Sole power to vote or to
direct the vote none.
	(ii)	Shared power to vote or to
direct the vote 318,254
	(iii)	Sole power to dispose or
to direct the disposition of none.
	(iv)	Shared power to dispose or
to direct the disposition of 335,464

** The filing of this Schedule 13G shall not be construed as an admission that the reporting person or any of its affiliates is, for the purposes of Section 13(d) or 13(g) of the Securities Exchange Act of 1934, the beneficial owner of any securities covered by this Schedule 13G. In addition, the filing of this Schedule 13G shall not be construed as an admission that the reporting person or any of its affiliates is the beneficial owner of any securities covered by this Schedule 13G for any other purposes than Section 13(d) of the Securities Exchange Act of 1934.

*** See Exhibit A

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| Item 5. | Ownership of Five Percent
or Less of a Class |
| --- | --- |
| | If this statement is being filed to report the fact
that as of the date hereof the reporting person has ceased to be the
beneficial owner of more than five percent of the class of securities, check
the following ý . |
| Item 6. | Ownership of More than
Five Percent on Behalf of Another Person |
| | Not Applicable. |
| Item 7. | Identification and
Classification of the Subsidiary Which Acquired the Security Being Reported
on By the Parent Holding Company or Control Person |
| | See Exhibit A. |
| Item 8. | Identification and
Classification of Members of the Group |
| | Not applicable. See Exhibit A. |
| Item 9. | Notice of Dissolution of Group |
| | Not applicable. |
| Item 10. | Certification |
| | Because this statement is
filed pursuant to Rule 13d 1(b), the following certification is included: By signing below I certify
that, to the best of my knowledge and belief, the securities referred to above
were acquired in the ordinary course of business and were not acquired and
are not held for the purpose of or with the effect of changing or influencing
the control of the issuer of the securities and were not acquired and are not
held in connection with or as a participant in any transaction having that
purpose or effect. |

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SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated this 9th day of May, 2006 .

| The TCW Group, Inc., on
behalf of the TCW Business Unit | |
| --- | --- |
| By: | /s/ Linda D. Barker |
| | Linda D. Barker Authorized Signatory |

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EXHIBIT A

RELEVANT SUBSIDIARIES OF PARENT HOLDING COMPANY

*PART A: TCW Entities*

Parent Holding Company :

The TCW Group, Inc.

Relevant Subsidiaries that are persons described in Rule 13d-1(b) :

| (i) | Trust
Company of the West, a California corporation and a bank as defined in
Section 3(a)(6) of the Securities Exchange Act of 1934. |
| --- | --- |
| (ii) | TCW
Asset Management Company, a California corporation and an Investment Adviser
registered under Section 203 of the Investment Advisers Act of 1940. |
| (iii) | TCW Investment
Management Company, a California corporation and an Investment Adviser
registered under Section 203 of the Investment Advisers Act of 1940. |

This Schedule 13G is being filed by the TCW Group, Inc., a Nevada corporation (“TCW”), on behalf of itself and its direct and indirect subsidiaries, which collectively constitute The TCW Group, Inc. business unit (the “TCW Business Unit” or the “Reporting Person”). The TCW Business Unit is primarily engaged in the provision of investment management services.

As of July 6, 2001, the ultimate parent company of TCW is Société Générale, S.A., a corporation formed under the laws of France (“SG”). The principal business of SG is acting as a holding company for a global financial services group, which includes certain distinct specialized business units that are independently operated, including the TCW Business Unit.

SG, for purpose of the federal securities laws, may be deemed ultimately to control TCW and the TCW Business Unit. SG, its executive officers and directors, and its direct and indirect subsidiaries (including all business units except the TCW Business Unit), may beneficially own shares of the securities of the issuer to which this schedule relates (the “Shares”) and such shares are not reported in this statement. In accordance with Securities and Exchange Commission (“SEC”) Release No. 34-39538 (January 12, 1998), and due to the separate management and independent operation of its business units, SG disclaims beneficial ownership of Shares beneficially owned by the Reporting Person. The Reporting Person disclaims beneficial ownership of Shares beneficially owned by SG and any of SG’s other business units.

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