Table 7 Relative wage differentials between workers with FTCs and permanent contracts (OLS regressions, complete sample) with different transformation approaches
(1) | (2) | (3) | (4) | (5) | |
|---|---|---|---|---|---|
Estimated differential logWAGES(β) | −0.4061 | −0.1932 | −0.1575 | −0.1529 | −0.1269 |
Transformation not adjusted for heteroskedasticity: 100(exp(β)Q−1) | −33.38 % | −17.57 % | −14.57 % | −14.18 % | −11.92 % |
Transformation adjusted for heteroskedasticity: (exp(β)Q N −1) | −32.10 % | −15.25 % | −11.70 % | −11.26 % | −9.39 % |
Transformation adjusted for heteroskedasticity: (exp(β)Q T −1) | −32.23 % | −15.41 % | −11.87 % | −11.43 % | −9.50 % |
\(Q_{N} = \exp(0.5(\hat{\sigma} _{\mathit{FTC} = 1} - \hat{\sigma} _{\mathit{FTC} = 0}))\) | 1.0191 | 1.0282 | 1.0337 | 1.0340 | 1.0287 |
\(Q_{T} = (1 + 0.5\hat{\sigma} _{\mathit{FTC} = 1})/(1 + 0.5\hat{\sigma} _{\mathit{FTC} = 0})\) | 1.0172 | 1.0262 | 1.0317 | 1.0321 | 1.0275 |