Which Hesiod poem says that Pandora released troubles from a jar?

Hesiod’s Works and Days says that Pandora released troubles from a jar.

Works and Days is an archaic Greek didactic poem traditionally attributed to Hesiod. It combines practical advice about farming and justice with myths explaining why human life contains labor, hardship, and suffering. The Pandora episode appears in this context as part of Zeus’s punishment after Prometheus gives fire to humanity.

The poem describes a sealed vessel containing evils that escape when Pandora opens it. It also says that hope remains inside after the lid is replaced. The wording is important because the original vessel is a pithos, not the small container suggested by the familiar English phrase “Pandora’s box.”

Hesiod’s Theogony also discusses Pandora and the consequences of Prometheus’s actions, but the detailed jar episode belongs to Works and Days. The Iliad and the Odyssey do not provide the canonical account of Pandora opening the vessel.