Item 8.01 Other Events

The following documents are filed with reference to the Registration Statement (No. 333-155571) on Form S-4 (the "Registration Statement"), filed by Marsh & McLennan Companies, Inc. with the Securities and Exchange Commission on November 21, 2008, as amended on December 5, 2008. Such documents are filed in connection with the issuance of shares under the Registration Statement pursuant to an Agreement and Plan of Merger dated as of March 2, 2009.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits

5.1 Opinion of Gibson, Dunn & Crutcher LLP.

5.2 Opinion of Gibson, Dunn & Crutcher LLP.

23.1 Consent of Gibson, Dunn & Crutcher LLP (contained in Exhibit 5.1).

23.2 Consent of Gibson, Dunn & Crutcher LLP (contained in Exhibit 5.2).