A stevedore was a manual laborer who loaded and unloaded freighters and other cargo vessels.
Nowan and his men escaped from prison by hiding in an empty powder cask and letting the stevedores load them onto a warship. (TOS - The Captain's Table novel: Where Sea Meets Sky)
In 2269, in the aftermath of the Talin IV disaster, James T. Kirk (under the alias Leonard Scott) got a job as a stevedore at Orbital Transfer Control. (TOS novel: Prime Directive)
In 2311, Rafaele Buonarroti joked to John Harriman that if their Starfleet careers didn't work out, they could sign on as stevedores on a merchant ship. (ST - The Lost Era novel: Serpents Among the Ruins)
By 2370, the role of stevedore was filled by robots. (TNG novel: Balance of Power)