Light and Shiftwork - Intervention study on lighting and shift work

Project No. FF-FP 0444




The aim of the study is to improve health of employees by implementing circadian lighting strategies. The project will investigate the short and long-term effects of three intervention strategies on employees in the metal industry.

Light is important for the ability to concentrate and thus to prevent mistakes and accidents at work. However, frequently changing and unnatural light profiles can lead to a desynchronization of biological circadian rhythms and are therefore discussed to be a risk factor for the development of sleep disorders and a number of diseases, such as cancer, diabetes and cardiovascular diseases. The effects of new, dynamic lighting systems in the workplace have only been studied in a few occupational health studies.


In this intervention study, employees in a three-shift system with night shifts as well as in a two-shift system with early and late shifts will be studied. Three important strategies to improve individual light profiles will be tested

  • dynamic lighting during the day
  • dynamic lighting in the evening and during the night shift and
  • ndividualized light recommendations.

The study will generate practice-relevant knowledge about the effects of the use of dynamic lighting systems at the workplace, taking into account individual factors of the employees. The intervention will provide an important data basis for simple and innovative measures to improve health at work for employers, employees and policy makers in the area of occupational health and safety.

Last Update:

6 May 2021


Financed by:
  • Deutsche Gesetzliche Unfallversicherung e. V. (DGUV)
Research institution(s):
  • Institut für Prävention und Arbeitsmedizin der Deutschen Gesetzlichen Unfallversicherung - Institut der Ruhr-Universität Bochum (IPA)
  • Universitätsklinikum Hamburg-Eppendorf (UKE), Zentralinstitut für Arbeitsmedizin und Maritime Medizin (ZfAM)

-cross sectoral-

Type of hazard:

work-related health hazards


working time, prevention, lighting

Description, key words:

lighting, shiftwork