38 C.F.R. § 21.6420
It is the responsibility of the VR&E Division to inform the Veterans Service Center in writing of the following changes in the veteran's circumstances contained in the following paragraphs.
(Authority: 38 U.S.C. 1524, Pub. L. 101-237)
(a) Evaluation.
(2) The date the evaluation is resumed.
(Authority: 38 U.S.C. 1524, Pub. L. 101-237)
(b) Income information. Any information relating to income from work or training which may affect the veteran's continued entitlement to pension, including participation in:
(5) Full- or part-time employment.
(Authority: 38 U.S.C. 1524)
(c) Dependency changes. Information regarding dependency changes if the case manager learns of such changes in the normal course of performing his or her duties.
(Authority: 38 U.S.C. 1524)
(d) Information to determine if the veteran's permanent and total disability rating is protected under § 3.343. The information provided by the case manager includes:
(3) The veteran maintained his or her employment for 12 consecutive months.
(Authority: 38 U.S.C. 1524, Pub. L. 101-237)
[53 FR 4397, Feb. 16, 1988, as amended at 56 FR 21449, May 9, 1991; 71 FR 28586, May 17, 2006]