Table 2.

Effects of bracero exclusion on domestic seasonal agricultural employment: Differences-in-differences with continuous treatment, monthly

Specification:	All states, all years		All states, years 1960–1970		Exposed states only, all years
	linear	ln	linear	ln	linear	ln
$I_{t\ge 1965}·{\overline{\ell }}_s^{1955}$	−6949.2	−0.311	−1843.0	−0.113	−312.2	−0.142
	(9093.5)	(0.509)	(6859.3)	(0.375)	(7463.0)	(0.566)
N	10329	6386	6072	3707	5168	3189
adj. R2	0.055	0.085	0.079	0.076	0.028	0.053
Clusters	46	46	46	46	23	23

Dep. var.: Domestic seasonal workers. ‘Treatment’ is the degree of exposure to exclusion. Observations are state-months. All regressions include state and month-by-year fixed effects. Standard errors clustered by state in parentheses. ℓ̄₁₉₅₅ is average fraction of Mexicans among the state’s total hired seasonal workers across the months of 1955. Covers only January 1954 to July 1973, as in original sources. Farm worker stocks missing in original sources for 1955 in Rhode Island and New Hampshire. If no workers reported for state-month in a month when source report was issued, assume zero. ‘Exposed states’ means states with nonzero bracero stocks in 1955 (i.e., only the ‘high’ and ‘low’ groups in the figures).