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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                    FORM 8-K

                             CURRENT REPORT PURSUANT
                          TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

          Date of report (Date of earliest event reported) June 1, 2006

                            MICHAEL BAKER CORPORATION
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             (Exact Name of Registrant as Specified in Its Charter)

                                  Pennsylvania
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                 (State or Other Jurisdiction of Incorporation)

                1-6627                                 25-0927646
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        (Commission File Number)            (IRS Employer Identification No.)

            100 Airside Drive
       Moon Township, Pennsylvania                       15108
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(Address of Principal Executive Offices)               (Zip Code)

                                 (412) 269-6300
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              (Registrant's Telephone Number, Including Area Code)


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          (Former Name or Former Address, if Changed Since Last Report)

     Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

[ ]  Written communications pursuant to Rule 425 under the Securities
     Act (17 CFR 230.425)

[ ]  Soliciting material pursuant to Rule 14a-12 under the Exchange
     Act (17 CFR 240.14a-12)

[ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d-2(b))

[ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))

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                       SECTION 2 - FINANCIAL INFORMATION

ITEM 2.02.  RESULTS OF OPERATIONS AND FINANCIAL CONDITION.

On January 31, 2006, Michael Baker Corporation ("the Company") issued a press
release and filed a related Form 8-K announcing that its previously issued
consolidated financial statements for fiscal years 2000, 2001, 2002, 2003 and
2004, and its related interim consolidated financial statements for each of the
quarters of 2003 and 2004 and the first quarter of 2005 (collectively, "the
restatement period"), should not be relied upon because of errors in those
financial statements and that such financial statements will be restated. These
documents also discussed the existence of certain material weaknesses in
internal control over financial reporting as of December 31, 2004. Those
documents should be referenced for additional information.

On June 1, 2006, the Company issued a press release announcing that its
previously issued consolidated financial statements for the restatement period
will be further impacted by additional tax accounting and compliance errors that
have been identified. These additional errors were identified as a result of
steps taken by the Company's management to address the Company's material
control weaknesses and ensure that there were no additional tax or other
accounting issues that could impact our prior years' consolidated financial
statements.

These additional tax accounting and compliance errors involve the underaccrual
and underpayment of international and state income, payroll and other indirect
taxes, and related penalties and interest, within the Company's Energy segment.
Additional adjustments will be required to record the effects of these tax
obligations and the related penalty and interest expense amounts in our restated
consolidated financial statements.

Management has also identified certain vehicle and equipment leases that were
previously reported as operating leases but should have been treated as capital
leases by both the Engineering and Energy segments during the restatement
period. While this correction is not expected to have a material effect on our
consolidated income statements during any year within the restatement period,
our balance sheets and statements of cash flows during the restatement period
will be adjusted by the recording of additional fixed assets under capital lease
(which are currently expected to total in the range of $1.0 million to $1.5
million) and a related capital lease obligation (liability).

We previously stated that we intended to file an amended Annual Report on Form
10-K for the year ended December 31, 2004 and an amended Quarterly Report on
Form 10-Q for the first quarter of 2005, and that all necessary effects of the
restatement of our 2000, 2001, 2002, 2003, 2004, and first quarter 2005
consolidated financial statements would be included in these filings. Since the
deadline for the Company's 2005 Form 10-K has now passed, we currently intend to
include all necessary effects of the restatement of these consolidated financial
statements in an amended Form 10-Q filing for the quarter ended March 31, 2005;
our Form 10-Q filings for the quarters ended June 30, 2005 and September 30,
2005; and our Form 10-K filing for the year ended December 31, 2005. As a
result, we will not include restated consolidated financial information for
fiscal year 2000 in the five-year summary of Selected Financial Data in our 2005
Form 10-K. Accordingly, the income statement effects of the restatement for
fiscal year 2000 will be included in our opening retained earnings balance as of
January 1, 2001.

                                       -2-


After giving effect to the additional corrections that will now be necessary,
the aggregate effect of all corrections (i.e., those previously reported in the
Form 8-K dated January 31, 2006 and the new items reported herein), including
the related tax effects, is currently expected to result in net income
reductions in the range of $2.0 million to $4.0 million in each of the 2001,
2002, 2003 and 2004 fiscal years, and a total net income reduction in the range
of $10.0 million to $10.5 million for this four-year period; a net income
reduction in the range of $1.0 million to $1.5 million for the first quarter of
2005; and a cumulative reduction in the range of $14.0 million to $15.0 million
in the Company's retained earnings as of March 31, 2005.

Management currently believes that certain of our recently identified additional
tax exposures may ultimately either be recoverable from clients or may not be
determined to reflect liabilities of the Company. Examples could include:

     o    The assessment of certain indirect tax obligations by tax authorities
          to our clients in situations where we had the obligation to charge the
          client for these taxes, collect the tax and remit it to the tax
          authorities, or

     o    Our successful negotiation of tax penalties and interest at less than
          full statutory rates in situations where such penalty and interest
          obligations have been accrued at full statutory rates based on the
          best information currently available.

Based on information currently available, these exposures have been determined
to reflect probable liabilities of the Company. However, depending on the
outcome of future negotiations and discussions with clients and tax authorities,
subsequent conclusions may be reached which indicate that portions of these
additional tax exposures may not require payment and therefore could be reversed
in future periods. This could result in favorable effects on our income
statements in future periods.

Our Forms 10-Q for the quarters ended June 30, 2005 and September 30, 2005, our
Form 10-K for the year ended December 31, 2005, and our Form 10-Q for the
quarter ended March 31, 2006 have not been timely filed, but will be filed with
the Securities and Exchange Commission as soon as practicable. As previously
disclosed, the Company's historical consolidated financial statements for the
five years ended December 31, 2004, and the quarter ended March 31, 2005, should
not be relied upon.

Management currently believes that all issues which will require restatement of
the Company's consolidated financial statements for each of the five years in
the period ended December 31, 2004, and the first quarter of 2005, have been
identified. However, the estimated restatement amounts disclosed above remain
preliminary, unaudited, and subject to adjustment, possibly by amounts that
could be material individually or in the aggregate. In addition, it is possible
that the Company may identify additional new issues which could also impact its
previously issued consolidated financial statements and the scope of the
restatement described in this Current Report on Form 8-K. In the event that new
issues requiring restatement arise, it is possible that such additional
adjustments could be material individually or in the aggregate.

                                      -3-


Statements contained in this Form 8-K that disclose the Company's or
management's intentions, expectations or predictions of the future, including
expected restatement adjustments to previously issued consolidated financial
statements, are forward-looking statements. The actual amounts and effects of
the Company's restatement adjustments could differ materially from those
projected in such forward-looking statements.

                  SECTION 9 - FINANCIAL STATEMENTS AND EXHIBITS

ITEM 9.01.  FINANCIAL STATEMENTS AND EXHIBITS.

(d)    Exhibits

The following exhibit is filed with this report:

Exhibit No.   Description
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99.1          Press release dated June 1, 2006, filed pursuant to Item 4.02(a).

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                                    SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended,
the Company has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                            MICHAEL BAKER CORPORATION

                                            By:  /s/  William P. Mooney
                                                 -------------------------------
                                                 Executive Vice President and
                                                 Chief Financial Officer

Date: June 1, 2006

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                                  EXHIBIT INDEX

Number    Description                                           Method of Filing
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99.1      Press release dated June 1, 2006, filed pursuant      Filed herewith.
          to Item 4.02(a).

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