VACATIONERS HAPPIER, BUT MOSTLY NOT HAPPIER AFTER A HOLIDAY The aim of this study was to obtain a greater insight into the association between vacations and happiness. We examined whether vacationers differ in happiness, compared to those not going on holiday, and if a holiday trip boosts posttrip happiness. These questions were addressed in a pre-test/post-test design study among 1,530 Dutch individuals. 974 vacationers answered questions about their happiness before and after a holiday trip. Vacationers reported a higher degree of pre-trip happiness, compared to non-vacationers, possibly because they are anticipating their holiday. Only a very relaxed holiday trip boosts vacationers happiness further after return. Generally, there is no difference between vacationers and non-vacationers post-trip happiness. The findings are explained in the light of set-point theory, need theory and comparison theory.