Field workers are people who work outdoors in a variety of roles. OXEN are animals trained to pull heavy loads, often used in agriculture. PEONS are laborers who do manual work such as digging and carrying heavy loads. REFS are referees or umpires who officiate sports games. HANDS are manual laborers who perform tasks such as planting, harvesting, and maintenance. Mowers are people who use machines to cut grass and other vegetation. All of these field workers play an important role in outdoor labor.