Missing wages: How to test for biased estimates in wage functions?
This paper investigates how to test for nonresponse selection bias in wage functions induced by missing income information. We suggest an “easy-to-implement” approach which requires information on interviewer IDs and the interview date rather than hard-to-get interviewer characteristics.
Fertig, M. und K. Görlitz (2013), Missing wages: How to test for biased estimates in wage functions?. Economics Letters, 118,2 , 269-271