Processes accounts receivable activities for assigned trusts, including COBRA and self-pay payments, refunds, cash receipts, deposits, contribution reports, reconciliations, delinquency audits, and month-end corrections. Responds to billing inquiries, maintains employer contracts, researches payment discrepancies, and ensures compliance with plan and company guidelines. Requires a high school diploma or GED, one year of Level 1 accounts receivable experience, and proficiency with Microsoft Office.