UNITED STATES
                        SECURITIES EXCHANGE COMMISSION
                            Washington, D.C. 20549

-------------------------------------------------------------------------------


                                 SCHEDULE 13G

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

                           WESCO INTERNATIONAL, INC.
                           -------------------------
                               (Name of Issuer)


                    Common Stock, $.01 par value per share
                -------------------------------------------------
                        (Title of Class of Securities)


                                  95082P105
                             -------------------
                                (CUSIP Number)


                              February 20, 2007
                          --------------------------
            (Date of Event which Requires Filing of this Statement)


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

                              [ ]   Rule 13d-1(b)

                              [X]   Rule 13d-1(c)

                              [ ]   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).


                         Continued on following pages
                               Page 1 of 10 Pages
                             Exhibit Index: Page 9




                                 SCHEDULE 13G

CUSIP No.: 95082P105                                          Page 2 of 10 Pages
...............................................................................
1.    Names of Reporting Persons.

      I.R.S. Identification Nos. of above persons (entities only).


      GLENVIEW CAPITAL MANAGEMENT, LLC
...............................................................................
2.    Check the Appropriate Box if a Member of a Group

      (a) [ ]

      (b) [ ]
...............................................................................
3.    SEC Use Only
...............................................................................
4.    Citizenship or Place of Organization

      Delaware
...............................................................................
Number of       5.    Sole Voting Power           None
Shares        ................................................................
Beneficially    6.    Shared Voting Power         2,747,000
Owned by Each ................................................................
Reporting       7.    Sole Dispositive Power      None
Person With   ................................................................
                8.    Shared Dispositive Power    2,747,000
...............................................................................
9.    Aggregate Amount Beneficially Owned by Each Reporting Person

      2,747,000
...............................................................................
10.   Check if the Aggregate Amount in Row (9) Excludes Certain Shares
      (See Instructions)

      [  ]
...............................................................................
11.   Percent of Class Represented by Amount in Row (9)

      5.62% based on 48,864,640 shares outstanding as of February 27, 2007.
...............................................................................
12.   Type of Reporting Person:

      OO



                                 SCHEDULE 13G

CUSIP No.:   95082P105                                        Page 3 of 10 Pages
...............................................................................
1.    Names of Reporting Persons.

      I.R.S. Identification Nos. of above persons (entities only).


      GLENVIEW CAPITAL GP, LLC
...............................................................................
2.    Check the Appropriate Box if a Member of a Group

      (a) [ ]

      (b) [ ]
...............................................................................
3.    SEC Use Only
...............................................................................
4.    Citizenship or Place of Organization

      Delaware
...............................................................................
Number of       5.    Sole Voting Power           None
Shares        ................................................................
Beneficially    6.    Shared Voting Power         2,747,000
Owned by Each ................................................................
Reporting       7.    Sole Dispositive Power      None
Person With   ................................................................
                8.    Shared Dispositive Power    2,747,000
...............................................................................
9.    Aggregate Amount Beneficially Owned by Each Reporting Person

      2,747,000
...............................................................................
10.   Check if the Aggregate Amount in Row (9) Excludes Certain Shares
      (See Instructions)

      [  ]
...............................................................................
11.   Percent of Class Represented by Amount in Row (9)

      5.62% based on 48,864,640 shares outstanding as of February 27, 2007.
...............................................................................
12.   Type of Reporting Person:

      OO





                                 SCHEDULE 13G

CUSIP No.:   95082P105                                        Page 4 of 10 Pages
...............................................................................
1.    Names of Reporting Persons.

      I.R.S. Identification Nos. of above persons (entities only).


      LAWRENCE M. ROBBINS
...............................................................................
2.    Check the Appropriate Box if a Member of a Group

      (a) [ ]

      (b) [ ]
...............................................................................
3.    SEC Use Only
...............................................................................
4.    Citizenship or Place of Organization

      United States of America
...............................................................................
Number of       5.    Sole Voting Power           None
Shares        ................................................................
Beneficially    6.    Shared Voting Power         2,747,000
Owned by Each ................................................................
Reporting       7.    Sole Dispositive Power      None
Person With   ................................................................
                8.    Shared Dispositive Power    2,747,000
...............................................................................
9.    Aggregate Amount Beneficially Owned by Each Reporting Person

      2,747,000
...............................................................................
10.   Check if the Aggregate Amount in Row (9) Excludes Certain Shares
      (See Instructions)

      [  ]
...............................................................................
11.   Percent of Class Represented by Amount in Row (9)

      5.62% based on 48,864,640 shares outstanding as of February 27, 2007.
...............................................................................
12.   Type of Reporting Person:

      IA



                                                              Page 5 of 10 Pages


Item 1(a).      Name of Issuer:

                WESCO International, Inc. (the "Issuer").

Item 1(b).      Address of Issuer's Principal Executive Offices:

                225 West Station Square Drive, Suite 700, Pittsburgh,
Pennsylvania 15219.

Item 2(a).      Name of Person Filing:

                This  Statement  is filed  on  behalf  of each of the  following
persons (collectively, the "Reporting Persons"):

                i)   Glenview   Capital   Management,  LLC  ("Glenview   Capital
                     Management");

                ii)  Glenview   Capital GP,  LLC   ("Glenview  Capital GP"); and

                iii) Lawrence M. Robbins ("Mr. Robbins").

                This  Statement  relates to Shares (as defined  herein) held for
the accounts of Glenview Capital Partners,  L.P., a Delaware limited partnership
("Glenview Capital Partners"), Glenview Institutional Partners, L.P., a Delaware
limited partnership ("Glenview Institutional Partners"), Glenview Capital Master
Fund, Ltd., a Cayman Islands exempted company  ("Glenview Capital Master Fund"),
GCM Little Arbor Master Fund,  Ltd., a Cayman  Islands  exempted  company  ("GCM
Little Arbor Master Fund");  GCM Little Arbor  Institutional  Partners,  L.P., a
Delaware limited  partnership ("GCM Little Arbor Institutional  Partners"),  and
GCM Little Arbor Partners,  L.P., a Delaware  limited  partnership  ("GCM Little
Arbor Partners").

                Glenview Capital Management serves as investment manager to each
of Glenview Capital Partners,  Glenview Institutional Partners, Glenview Capital
Master  Fund,  GCM Little Arbor  Master  Fund,  GCM Little  Arbor  Institutional
Partners,  and GCM Little Arbor  Partners.  In such capacity,  Glenview  Capital
Management  may be deemed to have voting and  dispositive  power over the Shares
held  for  the  accounts  of  each  of  Glenview  Capital   Partners,   Glenview
Institutional  Partners,  Glenview  Capital Master Fund, GCM Little Arbor Master
Fund, GCM Little Arbor  Institutional  Partners,  and GCM Little Arbor Partners.
Glenview  Capital  GP is the  general  partner  of  Glenview  Capital  Partners,
Glenview Institutional Partners, GCM Little Arbor Institutional Partners and GCM
Little  Arbor  Partners.  Glenview  Capital GP also serves as the sponsor of the
Glenview  Capital  Master Fund and the GCM Little  Arbor  Master  Fund.  In such
capacities,  Glenview  Capital GP may be deemed to have  voting and  dispositive
power  over  the  Shares  held  for the  accounts  of each of  Glenview  Capital
Partners,  Glenview  Institutional  Partners,  Glenview Capital Master Fund, GCM
Little Arbor  Master Fund,  GCM Little  Arbor  Institutional  Partners,  and GCM
Little Arbor Partners.  Mr. Robbins is the Chief  Executive  Officer of Glenview
Capital Management and Glenview Capital GP.

Item 2(b).      Address of Principal Business Office or, if None, Residence:

                The address of the principal business office of each of Glenview
Capital  Management,  Glenview  Capital GP, and Mr. Robbins is 767 Fifth Avenue,
44th Floor, New York, New York 10153.





                                                              Page 6 of 10 Pages
Item 2(c).      Citizenship:

                i)   Glenview Capital Management is a Delaware limited liability
                     company;

                ii)  Glenview  Capital  GP  is  a  Delaware  limited   liability
                     company; and

                iii) Mr. Robbins  is  a citizen of the United States of America.

Item 2(d).      Title of Class of Securities:

                Common Stock, $.01 par value per share (the "Shares")

Item 2(e).      CUSIP Number:

                95082P105

Item 3.         If  This  Statement  is  Filed Pursuant to ss.ss.240.13d-1(b) or
                240.13d-2(b) or (c), Check Whether the Person Filing is a:

                This Item 3 is not applicable.

Item 4.         Ownership:

Item 4(a).      Amount Beneficially Owned:

                As of  March  1,  2007,  each of  Glenview  Capital  Management,
Glenview  Capital GP and Mr. Robbins may be deemed to be the beneficial owner of
2,747,000  Shares.  This amount  consists  of: (A)  136,300  Shares held for the
account of Glenview Capital Partners;  (B) 1,659,100 Shares held for the account
of Glenview  Capital  Master  Fund;  (C) 703,200  Shares held for the account of
Glenview Institutional  Partners; (D) 206,100 Shares held for the account of the
GCM Little  Arbor  Master  Fund;  (E) 41,200  Shares held for the account of GCM
Little Arbor Institutional  Partners;  and (F) 1,100 Shares held for the account
of GCM Little Arbor Partners.

Item 4(b).      Percent of Class:

                The  number  of  Shares  of  which  each  of  Glenview   Capital
Management,  Glenview  Capital  GP  and  Mr.  Robbins  may be  deemed  to be the
beneficial owner constitutes  approximately  5.62% of the total number of Shares
outstanding  (based  upon  information  provided  by  the  Issuer  in  its  most
recently-filed  annual  report  on  Form  10-K,  there  were  48,864,640  shares
outstanding as of February 27, 2007).

Item 4(c).      Number of Shares of which such person has:

Glenview Capital Management, Glenview Capital GP and Mr. Robbins:
-----------------------------------------------------------------

(i)   Sole power to vote or direct the vote:                                   0

(ii)  Shared power to vote or direct the vote:                         2,747,000

(iii) Sole power to dispose or direct the disposition of:                      0

(iv)  Shared power to dispose or direct the disposition of:            2,747,000



                                                              Page 7 of 10 Pages

Item 5.         Ownership of Five Percent or Less of a Class:

                This Item 5 is not applicable.

Item 6.         Ownership of More than Five Percent on Behalf of Another Person:

                This Item 6 is not applicable.

Item 7.         Identification  and  Classification   of  the  Subsidiary  Which
                Acquired  the  Security  Being Reported on By the Parent Holding
                Company:

                See disclosure in Item 2 hereof.

Item 8.         Identification  and  Classification  of  Members  of  the Group:

                This Item 8 is not applicable.

Item 9.         Notice of Dissolution of Group:

                This Item 9 is not applicable.

Item 10.        Certification:

                By signing below each of the Reporting  Persons  certifies that,
to the best of their knowledge and belief, the securities referred to above 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.




                                                              Page 8 of 10 Pages


                                   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.

Date: March 2, 2007                         GLENVIEW CAPITAL MANAGEMENT, LLC


                                            By: /s/ Lawrence M. Robbins
                                               -------------------------------
                                            Name:  Lawrence M. Robbins
                                            Title: Chief Executive Officer

Date: March 2, 2007                         GLENVIEW CAPITAL GP, LLC


                                            By: /s/ Lawrence M. Robbins
                                               -------------------------------
                                            Name:  Lawrence M. Robbins
                                            Title: Chief Executive Officer

Date: March 2, 2007                         LAWRENCE M. ROBBINS


                                            /s/ Lawrence M. Robbins
                                            ----------------------------------



                                                              Page 9 of 10 Pages


                                  EXHIBIT INDEX


Ex.                                                                  Page No.

A      Joint Filing Agreement, dated March 2, 2007 by and
       among Glenview Capital Management, LLC, Glenview Capital
       GP, LLC and Lawrence M. Robbins.................................       10






                                                             Page 10 of 10 Pages



                                    EXHIBIT A

                             JOINT FILING AGREEMENT

      The  undersigned  hereby  agree that the  statement  on Schedule  13G with
respect to the Common Stock of WESCO  International,  Inc.  dated as of March 2,
2007 is, and any  amendments  thereto  (including  amendments  on Schedule  13D)
signed  by each of the  undersigned  shall  be,  filed on  behalf  of each of us
pursuant to and in accordance  with the  provisions  of Rule 13d-1(k)  under the
Securities Exchange Act of 1934, as amended.

Date: March 2, 2007                    GLENVIEW CAPITAL MANAGEMENT, LLC


                                       By: /s/ Lawrence M. Robbins
                                           ---------------------------------
                                       Name:   Lawrence M. Robbins
                                       Title:  Chief Executive Officer


Date: March 2, 2007                         GLENVIEW CAPITAL GP, LLC


                                            By: /s/ Lawrence M. Robbins
                                               -------------------------------
                                            Name:  Lawrence M. Robbins
                                            Title: Chief Executive Officer


Date: March 2, 2007                    LAWRENCE M. ROBBINS

                                       /s/ Lawrence M. Robbins
                                       -------------------------------------