The majority of survey instruments included a question asking for a respondents earnings during the past month. It is possible to obtain earnings information by multiplying the hourly wage times the hours worked per week. However, if a respondent had more than one current job, that information would be incomplete, since it would measure only earnings from one job instead of all jobs.
The WES, Missouri, Alameda, and Illinois surveys included a question asking for other household members earnings during the past month. The survey instruments that did not ask for other household members earnings directly did include a question that asked for other household members income, which included earnings.