Variable	Always domestic			Always foreign
Variable	Mean	Std. Dev.	N	Mean	Std. Dev.	N	p-value
Schooling	8.505	1.704	98	9.289	1.665	140	0.000
Experience	18.595	3.111	98	17.956	2.983	140	0.111
Tenure	77.501	27.522	98	77.268	30.865	140	0.952
Female	0.212	0.168	98	0.138	0.168	140	0.001
Foreign worker	0.007	0.007	98	0.008	0.012	140	0.319
Firm size	775.857	768.731	98	689.171	693.513	140	0.365
Log avg. hourly pay	2.517	0.449	98	2.513	0.465	140	0.945
Change in log pay	0.001	0.108	50	0.003	0.114	139	0.882
Foreign firm	0.000	0.000	98	1.000	0.000	140