Willbros Group, an independent contractor serving the oil,

gas, power, refining and petrochemical industries, has announced that Ron Lefaive will be retiring from his roles as vice president of accounting and

tax, and corporate controller, effective the end of 2012.

In other news, Ed Vasquez has been appointed to the position

of tax director. He will be responsible for the direction and oversight of all income

tax functions.

On the heels of Lefaive's retirement, Willbros announced that

it is undergoing a search for a new chief accounting officer in order to address

“the increased complexity and size of the company's operations.” The CAO also

will serve as corporate controller and report to Executive Vice President and

CFO Van Welch.