To perform this job successfully, an individual should have knowledge of writing simple correspondences to customers, basic knowledge of accounting practices, the ability to answer billing related questions via phone and/or email, knowledge and experience with Database software, Spreadsheet software and Word Processing software. As one of the largest employer associations in the nation, MRA helps its member organizations thrive by offering the most comprehensive assortment of HR services, information, education, and resources to help build successful workplaces and a powerful workforce..