A retail cashier provides point-of-sale service at a retail store. In this customer service career, your job duties involve operating a cash register or other payment terminal. Your responsibilities include ensuring the correctness of each transaction and providing a receipt to the customer who made the purchase. You may need to provide information or answer questions about sales and other offers. A retail cashier can work at any retail outlet. Larger employers, like department stores, grocery stores, and big box stores, often have many cashiers on staff.