field hand 
noun chiefly historical
A person, especially a US slave, employed as a farm labourer.In late 1926, African workers fled from their positions as field hands on Portuguese-run maize farms in the central Mozambican districts of Manica and Chimoio....
- Often disguised as a field hand or poor farm wife, she led several spy missions herself, while directing others from Union lines.
- Out in the plantations Dawson saw the field hands working, planting crops to be harvested in the summer.