From: Do high-skill immigrants raise productivity? Evidence from Israeli manufacturing firms, 1990-1999
 | Dependent variable: log output per worker | ||||
 | Pooled OLS | Fixed Effects | Fixed Effects, IV (Instrument: predicted immigrant share) | ||
Share immigrants | -0.284** (0.086) | -0.028 (.040) | 0.216 (.554) | 0.052 (.173) | -0.004 (.308) |
Log capital per worker | 0.100** (.021) | 0.007 (.013) | 0.001 (.015) | 0.005 (0.014) | 0.006 (.013) |
Log materials per worker | 0.782** (.022) | 0.797** (.025) | 0.806** (.030) | 0.801** (.024) | 0.797** (.026) |
Log employment | 0.021 (.014) | -0.035** (.015) | -0.037** (.017) | -0.041** (.018) | -0.045** (.018) |
Time controls | Year dummies | Year dummies | Year dummies | Two time periods | Linear time trend |
N | 760 | 760 | 760 | 760 | 760 |
R2 | 0.960 | 0.938 | 0.875 | 0.882 | 0.882 |
First stage F- statistic | - | - | 5.014 | 17.05 | 10.79 |
Implied production function parameters | |||||
α | 0.100** (.021) | 0.007 (.013) | 0.001 (.015) | 0.005 (0.014) | 0.006 (.013) |
β | 0.782** (.022) | 0.797** (.025) | 0.806** (.030) | 0.801** (.024) | 0.797** (.026) |
γ | 0.139** (.019) | 0.162** (.021) | 0.156** (.026) | 0.153** (.021) | 0.153** (.026) |
μ | -2.047** (.695) | -0.173 (.246) | 1.390 (3.680) | 0.339 (1.144) | -0.025 (2.012) |