Section 841.105 - Administration of FERS(a) OPM has charge of the adjudication of all claims for basic benefits arising under FERS and of all matters directly or indirectly concerned with these adjudications.(b) In the adjudication of claims arising under FERS, OPM will consider and take appropriate action on counterclaims filed by the Government as set-offs against amounts payable from the Civil Service Retirement Fund.