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. Author manuscript; available in PMC: 2019 Oct 1.
Published in final edited form as: Labour Econ. 2018 Aug 13;54:116–134. doi: 10.1016/j.labeco.2018.08.001

Table 17:

Summary of DDD estimation

Before ADA After ADA Δt ΔΔ
Disabled No Protection β3 + β4 + β7 β2 + β3 + β4 + β5 + β6 + β7 + β8 β2 + β5 + β6 + β8
Protection
β3
β2 + β3 + β5
β2 + β5

Δs β4+ β7 β4+ β6 + β7 + β8 β6 + β8

Non-Disabled No Protection β4 β2 +β4 + β6 β2 + β6
Protection
-
β2
β2

Δs β4 β4+ β6 β6

ΔΔΔ β8