From a resource standpoint, the important point of this comparison is that including the marginal external costs of production and allocating resources based on the full social cost results in a higher price for the good (Ps > Pp) and less output (Os < Op) than only including the private costs.
Today, the nation's farmers are 17 years older than the average American worker, with the ranks of farmers who are 75 years and up outnumbering those in their prime working years of 35 to 44. One big reason U.S. farmers are going gray: spiraling costs.
Age U.S. crop workers are relatively young: in 2001-2002 the average age for both men and women was 33. Half of all workers were less than age 31, and a small percentage were younger than 18 (6%) or older than 54 (7%) (fig. 2.2). Figure 2.2 Age Distribution of Hired Crop Workers. Age varied by legal status, place of birth and, among foreign-born workers, by the number of years since first arriving to the United States. In 2001-2002, unauthorized workers were, on average, ten years younger than authorized workers (28 and 38, respectively).