Which role in JEPES is responsible for directly supervising the Marine reported on (MRO)?

The first line supervisor plays a crucial role in the Junior Enlisted Performance Evaluation System (JEPES) as they are directly responsible for overseeing the daily performance and professional development of the Marine reported on (MRO). This supervisory relationship facilitates effective performance evaluations, as first line supervisors have firsthand knowledge of the MRO’s tasks, responsibilities, and behavior in the work environment.

Their close interaction allows them to provide detailed feedback that reflects the MRO's strengths and areas for improvement. First line supervisors also play an important part in fostering an environment where the MRO can grow, learn, and succeed in their role. This responsibility is vital for ensuring that the evaluations are accurate, fair, and tailored to support the career progression of the Marine.

Other roles, such as senior officers or unit commanders, typically have a broader oversight function and may not be as involved in the day-to-day supervision of individual Marines. Peer evaluators offer valuable insights from a collective perspective but do not have the same direct supervisory authority. Therefore, the first line supervisor is best positioned to effectively perform the duties outlined in JEPES concerning the supervision and evaluation of the Marine.