The value of the questionnaire survey method in psychosocial research on shiftwork is reviewed. Industry and sample selection, development of a comprehensive and valid questionnaire, and procedures for conducting a large scale survey are described. Important factors in questionnaire development and surveying technique, such as determining the optimum questionnaire length, motivating respondents, and gaining employer and respondent cooperation, are discussed. The importance of response rate, generalizability of the data, and specificity of the hypotheses tested to the usefulness of the survey results is emphasized. The advantages of the survey method, which include cost effectiveness, a large data base, and broad scope of inquiry, and its disadvantages, which include lack of objectivity, are presented. The authors conclude that the questionnaire survey, especially when used in conjunction with a secondary source of data verification, is a valuable psychosocial research tool.