SOURCE: Willbros Group, Inc.

February 28, 2007 18:16 ET

Willbros Announces Earnings Release and Conference Call Schedule

HOUSTON, TX -- (MARKET WIRE) -- February 28, 2007 --Willbros Group, Inc. (NYSE: WG) today announced plans to release fourth quarter and full year 2006 results on Wednesday, March 7, 2007 after the market closes. In conjunction with the release, Willbros has scheduled a conference call, which will be broadcast live over the Internet on Thursday, March 8, 2007 at 9:00 a.m. Eastern Time (8:00 a.m. Central).

What:   Willbros Group, Inc. Fourth Quarter and Full Year Earnings
        Conference Call

When:   Thursday, March 8, 2007 - 9:00 a.m. Eastern Time

Where:  Live via phone by dialing 888-868-9080 and asking for the Willbros
        call at least 10 minutes prior to the start time. Or live over the
        Internet by logging on to the web address below.

Where: The webcast can be accessed from the
        home page.
A telephonic replay of the conference call will be available through March 22, 2007 and may be accessed by calling 877-519-4471 and using the passcode 8487408. Also, an archive of the webcast will be available shortly after the call on for a period of 12 months.

Willbros Group, Inc. is an independent contractor serving the oil, gas and power industries, providing engineering and construction, and facilities development and operations services to industry and government entities worldwide. For more information on Willbros, please visit our web site at

Contact Information

    Michael W. Collier
    Vice President, Investor Relations
    Willbros USA, Inc.
    (713) 403-8016

    Connie Dever
    Strategic Planning
    Willbros USA, Inc.
    (713) 403-8035