To examine the effects of household work on psychological states, a packet of questionnaires was distributed to 37 researchers. They were divided into high and low scorers on a household work measure. A multiple analysis of variance found that the low scorers, as compared to the high scorers, showed lower distress and higher arousal during the day time on a working day, while the low scorers showed lower distress as well as lower arousal in the evening of the work day. On the day off the distress was higher continuously during the day but the arousal was higher only in the evening among the high scorers. This result that distress and arousal were linked to the day and the time suggests that the household work functions as a psychological stressor.