The usual English title of Hesiod’s poem that includes the Pandora episode and advice to Perses is Works and Days. The poem is one of the two major works traditionally attributed to Hesiod, alongside the Theogony.
Works and Days is not only a mythological narrative. It gives practical and moral instruction about agriculture, labor, justice, seafaring, festivals, and the proper timing of activities. Hesiod addresses his brother Perses, whose disputes over an inheritance provide part of the poem’s personal setting. The Pandora story appears among explanations of why human life includes toil and suffering.
The Theogony is the other major Hesiodic poem and focuses on the origins and genealogies of the gods. It mentions Pandora but does not contain the same full account of the jar. Ovid’s Metamorphoses is a much later Latin work, while Argonautica concerns Jason and the Argonauts, so neither is the poem sought here.