This is a good and interesting question. In general, this will depend on what you mean by “vacation.” The EMPSTAT variable has a response category “employed–absent,” which (as noted on page 49 of the ATUS Users Guide) will include individuals who were not working during the seven days prior to the interview but had jobs or businesses from which they were temporarily absent because of illness, bad weather, vacation, childcare problems, labor-management disputes, maternity or paternity leave, job training, or other family or personal reasons, whether or not they were paid for the time off or were seeking other jobs. This clearly includes a broader list of reasons for being absent from work than simply vacation for the purpose of entertainment. More specifically, the WHYABSNT variable differentiates these different reasons. One of the response categories is “vacation/personal days.” This might be the most narrow definition of “vacation” available in ATUS data.