The website of the ICOH Committee on Shiftwork and Working Time, a committee of the International Commission on Occupational Health (ICOH)

Technical Documents and Downloads

The Standard Shiftwork Index (SSI)

You can download the the Standard Shiftwork Index (SSI) (.doc) and a brief manual (.doc) which describe the source of the various scales, their scoring, etc. A paper that describes the SSI in greater detail is:

Barton, J., Costa, G., Smith, L., Spelten, E., Totterdell, P. & Folkard, S. (1995) The Standard Shiftwork Index: A battery of questionnaires for assessing shiftwork-related problems. Work and Stress. 9, 3-30.

You can also download an abridged version of the SSI, the Survey of Shiftworkers (SOS), which excludes some of the less sensitive scales and the individual difference measures, but also includes some additional measures. The main additional measures are the retrospective ratings of alertness which are described in detail in:

Folkard, S., Spelten, E., Totterdell, P., Barton, J. & Smith, L. (1995) The use of survey measures to assess circadian variations in alertness. Sleep. 18, 355-61.

You are welcome to use either or both of these questionnaires in any non-profit-making research. The only thing we would ask is (i) that you acknowledge their source in any resultant report, and (ii) that you make copies of any reports resulting from their usage available to other users.

Meta Data

A proposed way to describe shift-schedules and irregular working hours systems as meta data by Dr. Johannes Gaertner and Dr. Simon Folkard. (Download PDF)

A proposed Standard for Storing Working-Time and Time related data (Download PDF)

 
 
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