An agricultural worker is a non immigrant class of admission, an alien coming temporarily to the U.S. to perform agricultural labor or services, as defined by the Secretary of Labor.
The following ios an example of a case law on agricultural worker:
Migrant agricultural worker is an individual who is employed in agricultural employment of a seasonal or other temporary nature, and who is required to be absent overnight from his permanent place of residence. [Avila v. A. Sam & Sons, 856 F. Supp. 763, 768 (D.N.Y. 1994)].