Traditionally, the professoriate has not been viewed as a stressful occupation. Academic freedom and tenure seemed to provide work conditions which were free of common stress producing pressures. Situations recognized as stressfO'in other occupations have now become common in academe. The study sought, inter alia, to identify the nature and extent of occupational stress in the professoriate. Data were collected by means of a questionnaire mailed to faculty in four Ontario universities. The respondents were from the professorial ranks in four areas of study. The research questions and hypotheses sought to test relationships between personal and occupational variables and perceived stress. It was found that quantity rather than the nature of the academic work was stressful. Teaching was the least stressful of the work functions and research the most, particularly among professors in the humanities. The hours spent on the job and tasks which had a time constraint were significant sources of stress for this sample. Rank rather than tenure status appeared to be more significantly related to perceived stress.