In which ancient Greek poem does Hesiod tell the main story of Pandora’s creation?

Hesiod tells the main story of Pandora’s creation in Works and Days.

Works and Days is a didactic poem about farming, justice, work, and the challenges of human life. Within that practical and moral framework, Hesiod explains why suffering and labor exist by recounting Zeus’s punishment involving Pandora.

The poem says that the gods fashioned Pandora and gave her various qualities before sending her to Epimetheus. Her opening of the vessel provides a mythic explanation for the troubles that affect mortals.

Theogony, another poem attributed to Hesiod, focuses mainly on the origins and generations of the gods. Although it helps explain the divine background of the myth, the detailed Pandora narrative belongs to Works and Days.