20 CFR § 680.790 - What is incumbent worker training?
Incumbent worker training must satisfy the requirements in WIOA sec. 134(d)(4) and increase the competitiveness of the employee or employer. For purposes of WIOA sec. 134(d)(4)(B), incumbent worker training is training:
(a) Designed to meet the special requirements of an employer (including a group of employers) to retain a skilled workforce or avert the need to lay off employees by assisting the workers in obtaining the skills necessary to retain employment.
(b) Conducted with a commitment by the employer to retain or avert the layoffs of the incumbent worker(s) trained.