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

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                                    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): March 5, 2008


                             ACME UNITED CORPORATION
             (Exact name of registrant as specified in its charter)
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          Connecticut                    001-07698              06-0236700
(State or other jurisdiction of         (Commission          (I.R.S. Employer
 incorporation or organization)         file number)        Identification No.)


60 Round Hill Road, Fairfield, Connecticut                        06824
 (Address of principal executive offices)                       (Zip Code)

       Registrant's telephone number, including area code: (203) 254-6060

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:

[_]  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))

                                      (1)

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On February 26, 2008, the Company's Board of Directors accepted Mr. Gary D. Penisten's proposal to the Company that he would not stand for re-election to the Company's Board of Directors at the next annual meeting to be held on April 21, 2008. Mr. Penisten, age 76, will retire from the board after serving for twelve years. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ACME UNITED CORPORATION By /s/ WALTER C. JOHNSEN ------------------------------ Walter C. Johnsen Chairman and Chief Executive Officer Dated: March 5, 2008 By /s/ PAUL G. DRISCOLL ------------------------------ Paul G. Driscoll Vice President and Chief Financial Officer Dated: March 5, 2008 (2)