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What Are the Lighting Needs of the Occupant (Worker)?

NIOSH 1975 Mar:87-92
The relationship between the level of lighting at the workplace and the health of the worker was examined with emphasis on the careful assessment of user requirements, both psychological and physiological. The levels of lighting compatible with the safety of the workers have been more or less established but there is no evidence that the light levels recommended for safety were the same as those required to assure the psychological health of the worker. The difference between physiological needs and psychological requirements has not been defined so far. In most studies task performance was the parameter used to determine the light levels for a given operation, while the emotional, intellectual, attitude, impressions and other psychological human features have not been given the same weight. Visual specialists were concerned primarily with achieving a degree of lighting compatible with an optimal performance, while designers were primarily concerned with sufficient light and shadows to create a healthy psychological environment. The author concludes that while the psychological aspects of lighting may be as important as the physiological needs, many of the former are highly personal and lighting levels should be adapted to the needs of the user.
Lighting-systems; Safety-measures; Occupational-health; Accident-prevention; Occupational-accidents; Illumination; Psychological-effects;
Publication Date
Document Type
Conference/Symposia Proceedings;
Fiscal Year
NTIS Accession No.
NTIS Price
Identifying No.
(NIOSH) 75-142
Source Name
The Occupational Safety and Health Effects Associated with Reduced Levels of Illumination. Proceedings of a Symposium, July 11-12, 1974, Cincinnati, Ohio, NIOSH, Division of Laboratory and Criteria Development, HEW Publication No. (NIOSH) 75-142