Who is labors?
Heracles was driven mad by Hera and in his madness he killed his children. To repay for this crime he was set 10 labors by his archenemy Eurystheus. However of the first 10 labors Eurystheus only accepted 8 of them and assingned him two more. If Heracles completed all the labors his sins would be forgiven and he would be granted immorality.