Table 9 Production functions – first differences estimates dependent variable: change in log output per worker
From: Do high-skill immigrants raise productivity? Evidence from Israeli manufacturing firms, 1990-1999
| Â | Sample: all available firms | Sample: balanced sample | ||||
|---|---|---|---|---|---|---|
| Â | 1990-1993 | 1993-1997 | Pooled | 1990-1993 | 1993-1997 | Pooled |
Share Immigrants | -0.048 (0.059) | -0.094** (0.042) | -0.073** (0.030) | 0.065 (0.067) | -0.056 (0.042) | -0.029 (0.036) |
Log capital per worker | 0.188** (0.044) | 0.068 (0.044) | 0.121** (0.028) | 0.168** (0.048) | 0.049 (0.041) | 0.071** (0.034) |
Log materials per worker | 0.584** (0.031) | 0.490** (0.056) | 0.567** (0.030) | 0.651** (0.044) | 0.449** (0.055) | 0.493** (0.050) |
Log employment | 0.085* (0.044) | -0.029 (0.045) | 0.032 (0.028) | 0.029 (0.039) | -0.089** (0.038) | -0.052 (0.035) |
Log R&D expenditures | 0.006 (0.013) | 0.001 (0.023) | -0.009 (0.011) | 0.007 (0.015) | 0.006 (0.022) | -0.009 (0.012) |
1 if no R&D expenditures | -0.028 (0.059) | -0.030 (0.152) | -0.088 (0.060) | 0.012 (0.079) | -0.005 (0.153) | -0.063 (0.073) |
Region dummies | Yes | Yes | Yes | Yes | Yes | Yes |
3-digit industry dummies | Yes | Yes | Yes | Yes | Yes | Yes |
N | 1700 | 661 | 2361 | 611 | 611 | 1222 |
R2 | 0.766 | 0.864 | 0.780 | 0.812 | 0.832 | 0.773 |
Implied production function parameters | ||||||
α | 0.188** (0.044) | 0.068 (0.044) | 0.121** (0.028) | 0.168** (0.048) | 0.049 (0.041) | 0.071** (0.034) |
β | 0.584** (0.031) | 0.490** (0.056) | 0.567** (0.030) | 0.651** (0.044) | 0.449** (0.055) | 0.493** (0.050) |
γ | 0.312** (0.027) | 0.413** (0.039) | 0.344** (0.024) | 0.210** (0.045) | 0.413** (0.034) | 0.385** (0.035) |
μ | -0.154 (0.189) | -0.227** (0.095) | -0.211** (0.086) | 0.310 (0.349) | -0.136 (0.100) | -0.076 (0.092) |