The job duties of a part-time bank teller involve providing services to customers at a bank branch. As a part-time employee, your work schedule adds up to less than 40 hours per week. Since banks are usually only open for the length of a single shift, this typically means work eight hours a few days a week instead of working short shifts. In this position, you help customers manage their accounts, perform deposits or withdrawals, and handle other types of transactions and account management tasks. Your responsibilities also include documenting transactions, processing and securing cash, and opening and closing accounts. You may also promote financial products to customers.