HOUSTON, TX, May 11, 2010 (MARKETWIRE via COMTEX) --Willbros Group, Inc. (NYSE: WG) today announced plans to release first quarter 2010 results on Monday, May 10, 2010, after the market closes. In conjunction with the release, Willbros has scheduled a conference call, which will be broadcast live over the Internet on Tuesday, May 11, 2010 at 9:00 a.m. Eastern Time (8:00 a.m. Central).

  What:         Willbros Group, Inc. First Quarter 2010 Earnings Conference
                Call

  When:         Tuesday, May 11, 2010 - 9:00 a.m. Eastern Time

  Where:        Live via phone by dialing 888-218-8176 or 913-312-0392,
                passcode 4848212, and asking for the Willbros call at least
                10 minutes prior to the start time.

  Where:        Live over the Internet by logging onto www.willbros.com on
                the home page under Events.

A telephonic replay of the conference call will be available through May 25, 2010 and may be accessed by calling 888-203-1112 or 719-457-0820 and using the passcode 4848212. Also, an archive of the webcast will be available shortly after the call on www.willbros.com for a period of 12 months.

Willbros Group, Inc. is an independent contractor serving the oil, gas, power, refining and petrochemical industries, providing engineering, construction, turnaround, maintenance, life cycle extension services and facilities development and operations services to industry and government entities worldwide. For more information on Willbros, please visit our web site at www.willbros.com.

This announcement contains forward-looking statements. All statements, other than statements of historical facts, which address activities, events or developments the Company expects or anticipates will or may occur in the future, are forward-looking statements. A number of risks and uncertainties could cause actual results to differ materially from these statements, including the potential for additional investigations; the disruptions to the global credit markets; the possible losses arising from the discontinuation of operations and the sale of the Nigeria assets; fines and penalties by government agencies; the identification of one or more other issues that require restatement of one or more prior period financial statements; the existence of material weaknesses in internal controls over financial reporting; availability of quality management; availability and terms of capital; changes in, or the failure to comply with, government regulations; ability to remain in compliance with, or obtain waivers under, the Company's loan agreements and indentures; the promulgation, application, and interpretation of environmental laws and regulations; future E&P capital expenditures; oil, gas, gas liquids, and power prices and demand, the amount and location of planned pipelines, the refinery crack spread and planned refinery outages and upgrades, the effective tax rate of the different countries where the work is being conducted, development trends of the oil, gas, power, refining and petrochemical industries; changes in the political and economic environment of the countries in which the Company has operations, as well as other risk factors described from time to time in the Company's documents and reports filed with the SEC. The Company assumes no obligation to update publicly such forward-looking statements, whether as a result of new information, future events or otherwise.

CONTACT:
Michael W. Collier
Vice President Investor Relations
Sales & Marketing
Willbros
713-403-8038

Connie Dever
Director Strategic Planning
Willbros
713-403-8035

SOURCE: Willbros Group, Inc.