In which Hesiod poem does the fullest early account of Pandora’s jar appear?

The fullest early account of Pandora’s jar appears in Hesiod’s poem Works and Days.

Works and Days is an archaic Greek poem combining farming advice, moral instruction, mythology, and reflections on justice. Its account of Pandora connects the origin of human suffering with the conflict between Zeus and Prometheus. The poem describes Pandora’s creation, her arrival at Epimetheus’s home, and the opening of the storage vessel.

Hesiod also refers to Pandora in the Theogony, but Works and Days provides the more developed narrative associated with the jar. Neither Homer’s Iliad nor Odyssey contains the standard Pandora story.

The poem is therefore the most specific ancient literary source for this myth. Identifying it helps separate the original Greek tradition from later artistic and literary adaptations that changed the vessel into a box.