EX-32.3 7 h50867exv32w3.htm CERTIFICATION OF CFO PURSUANT TO SECTION 1350 exv32w3
 

Exhibit 32.2
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
     In connection with the quarterly report of Willbros Group, Inc. (the “Company”) on Form 10-Q for the quarter ended September 30, 2007 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Van A. Welch, Chief Financial Officer of the Company, hereby certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:
1.   The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
2.   The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
         
Date: October 31, 2007
  /s/ Van A. Welch    
 
       
 
  Van A. Welch    
 
  Chief Financial Officer