A cash poster works with billing and payment, typically for medical and healthcare workplaces, such as physician offices, health insurance companies, or hospitals. Your job duties include posting received checks, processing payments from insurance companies and patients, and detailed record keeping of all accounts. Some workplaces may require you scan checks or provide detailed status reports. A career as a cash poster does not require you have formal qualifications or education; employers typically only require a high school diploma or GED certificate and basic math skills. Prior experience in a cash-handling role is helpful, but not necessary.