The Employee of the Month (EOM) is a type of reward program given out by companies (often to encourage the staff to work harder and more productively).
Traditionally, the award is given out every month, but that is not necessarily the case.
A document called Employee of the Month Selection Criteria suggests the two main criteria are "quality of work standards" and "attitude standards".
[1] Employee of the Month is usually based on performance, quality, attendance, and many other determining factors from previous month(s) based on the associate's role.
During this month, the associate is usually rewarded with a certificate, trophy, or other honors.