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Table 7 Instrumental variables panel estimates with interaction variables – the influence of specific working time accounts on productivity and wages per employee

From: Working time accounts and firm performance in Germany

 

log(PROD)

log(WpE)

 

RE

FE

RE

FE

WTA

1.689*** (0.332)

2.809 (2.793)

1.472*** (0.392)

1.064 (1.363)

WTA*CP < = 1Y

−0.580*** (0.124)

−0.605 (0.630)

−0.367*** (0.098)

−0.262 (0.327)

WTA

1.141*** (0.203)

2.327 (2.050)

0.646*** (0.146)

0.246 (0.169)

WTA*CP > 1Y

−0.347*** (0.071)

−0.455 (0.396)

−0.139*** (0.028)

−0.060* (0.032)

WTA

1.244*** (0.223)

2.164 (1.807)

0.703*** (0.170)

0.263 (0.197)

WTA*noFCP

−0.305*** (0.065)

−0.350 (0.275)

−0.088*** (0.025)

−0.024 (0.028)

  1. Notes: Basic control variables are the same as those in Tables 2 and 3. Additionally, interaction variables between WTA and the following variables are incorporated: CP < =1Y (=1 if compensation period within a year), CP > 1Y (=1 if compensation period is more than 1 year), noFCP (=1 if no fixed compensation period is agreed) are dummies. The WTA variable is instrumented as in Table 3; *p < 0.1, ***p < 0.01