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Table 3 Paid vacation and union membership in Germany (Panel Data Models)

From: Trade union membership and paid vacation in Germany

  Linear Fixed-Effects (FE) Correlated-Random-Effects Poisson (CRE_Poisson) (APEs)
  (1) (2) (3) (4) (5) (6)
  Simple Imputation 1 (SI 1) Simple Imputation 2 (SI 2) Multiple Imputation (MI) Simple Imputation 1 (SI 1) Simple Imputation 2 (SI 2) Multiple Imputation (MI)
Union Membership (um it ) 0.224 (0.370) 0.441* (0.232) 0.349* (0.204) 0.188 (0.352) 0.421* (0.226) 0.357 (0.224)
Mean Union Membership (\( {\overline{um}}_i \)) -- -- -- 0.596 (0.421) 0.486 (0.309) 0.511* (0.304)
Tenure 0.012 (0.033) 0.012 (0.030) 0.029 (0.028) 0.064*** (0.024) 0.065*** (0.023) 0.020 (0.024)
Tenure2 −0.001 (0.001) −0.001 (0.001) −0.001 (0.001) −0.001** (0.001) −0.002** (0.001) −0.002*** (0.001)
Part-time −0.647 (0.400) −0.672* (0.352) −0.636* (0.350) −0.567** (0.283) −0.477* (0.254) −0.537** (0.249)
Temporary contract −0.049 (0.521) −0.177 (0.449) −0.148 (0.447) 0.200 (0.461) −0.049 (0.394) 0.067 (0.376)
Firm size: 20 ≥ & < 200 0.376 (0.361) 0.397 (0.317) 0.384 (0.313) 0.553 (0.363) 0.628* (0.332) 0.535 (0.335)
Firm size: 200 ≥ & < 2000 1.564*** (0.454) 1.528*** (0.388) 1.463*** (0.387) 1.793*** (0.440) 1.714*** (0.390) 1.575*** (0.390)
Firm size: ≥ 2000 1.549*** (0.431) 1.699*** (0.377) 1.690*** (0.383) 1.768*** (0.431) 2.004*** (0.393) 1.894*** (0.398)
Unemployment rate 0.094 (0.064) 0.078 (0.059) −0.075* (0.041) −0.005 (0.024) −0.006 (0.022) −0.064** (0.020)
N 21028 24938 25776 21028 24938 25776
NI (number of imputed values) 14928 18031 19697 14928 18031 19697
n (number of individuals) 6226 7384 7653 6226 7384 7653
Wald_x (df) 60.4*** (25) 75.26*** (25) 45.9*** (17) 601.6*** (32) 690.5*** (32) 600.88*** (27)
  1. Note: SOEP 1985–2010. MI: Each imputed data set (m = 60) is an unbalanced panel of the particular survey years with N_all: 31302
  2. Dependent variable: Number of paid vacation days taken per year. Standard errors in parentheses, *p < 0.10, **p < 0.05, ***p < 0.01
  3. Additionally controlled for industries (NACE 1-digit) & survey year. SOEP weights are used
  4. Wald_x (df): Wald-test with H0: no joint significance of all covariates