Res judicata does not bar subsequent retaliation claim

The 11th Circuit just decided an interesting FLSA retaliation case. The plaintiffs filed suit  concerning overtime violations. Subsequently, after the initial suit was filed, the plaintiffs filed a second suit alleging retaliation occurring after the filing of the original claims. Because there was no amendment or subsequent pleading asserting the second claim in the first suit, disposition of the first suit did not bar the second suit as res judicata.