[Request for Review of Claims Group's Denial of Former IRS Employee's Claim for Temporary Promotion and Backpay]

A former Internal Revenue Service (IRS) employee claimed a retroactive temporary promotion and backpay incident to technical advisor and expert witness duties he performed over several years. GAO had held that it lacked authority to challenge the IRS determination that the claimant's duties were within the scope of his position. In his request for review, the claimant contended that his union's collective bargaining agreement with IRS provided for a temporary promotion and a subsequent pay increase for employees who were detailed to a higher-grade position for more than 30 days. GAO held that IRS did not detail the claimant to a higher-grade position. Accordingly, the claim was denied.