Both migrant and seasonal crop workers are sampled in the NAWS.

The use of an employer-based sample rather than a household-based sample increases the likelihood that migrant workers will be interviewed in the NAWS. In addition, the survey is designed to capture workers engaged in seasonal agricultural tasks by conducting interviews over three cycles. Recognizing that there are several federal and state definitions for migrant and seasonal workers, the NAWS collects data that allow analysts to use varying definitions of 'migrant' and 'seasonal.'