Zimmermann, Klaus F.; Haisken-DeNew, John P.; Brück, Tilman - 2003
regressors include regional wage rates, household income and several control variables for household composition. We find that … the demand for household work in the shadow economy is very income elastic. This suggests that targeted wage subsidies …, linked to household work agencies, would be very effective in raising the legal demand for domestic help. A wage subsidy of …