Shipping clerks keep records of all outgoing shipments. They prepare shipping documents and mailing labels and make sure that orders have been filled correctly. Also, they record items taken from inventory and note when orders were filled. Sometimes they fill the order themselves, obtaining merchandise from the stockroom, noting when inventories run low, and wrapping or packing the goods in shipping containers. They also address and label packages, look up and compute freight or postal rates, and record the weight and cost of each shipment. In addition, shipping clerks may prepare invoices and furnish information about shipments to other parts of the company, such as the accounting department. Once a shipment is checked and ready to go, shipping clerks may move the goods from the plant—sometimes by forklift—to the shipping dock and direct its loading.

Receiving clerks perform tasks similar to those of shipping clerks. They determine whether orders have been filled correctly by verifying incoming shipments against the original order and the accompanying bill of lading or invoice. They make a record of the shipment and the condition of its contents. In many firms, receiving clerks either use hand-held scanners to record barcodes on incoming products or enter the information into a computer. These data then can be transferred to the appropriate departments. The shipment is checked for any discrepancies in quantity, price, and discounts. Receiving clerks may route or move shipments to the proper department, warehouse section, or stockroom. They also may arrange for adjustments with shippers whenever merchandise is lost or damaged. Receiving clerks in small businesses may perform some duties similar to those of stock clerks. In larger establishments, receiving clerks may control all receiving-platform operations, such as scheduling of trucks, recording of shipments, and handling of damaged goods.

Traffic clerks maintain records on the destination, weight, and charges on all incoming and outgoing freight. They verify rate charges by comparing the classification of materials with rate charts. In many companies, this work may be automated. Information either is scanned or is entered by hand into a computer for use by the accounting department or other departments within the company. Traffic clerks also keep a file of claims for overcharges and for damage to goods in transit.