A pre-printed case label is provided for labeling cases that contain item-level packages such as clamshells of produce or loose bulk produce. The pre-printed case label includes a common identifier and space for adding a tag that includes a unique identifier. A case that includes the pre-printed case label and the tag provides case-level traceability through the distribution chain. Additionally, the item-level packages, or items of loose bulk produce, can include their own individual traceability codes to extend the traceability down to the item level. Methods provided herein associate non-lot-specific information, like brand and quantity, and lot-specific information, like harvest event data, with the unique identifier.