Radios simply add to the problem because they are often turned up to a level that exceeds the other noise in the area, simply adding to the problem. The structure of the workplace itself can present ergonomic problems. Inadequate lighting, too much light, excessive glare or improper placement of lighting can make work more difficult. Working on a black object while it is on a black table makes it very difficult to keep track of the assembly process. The work surface should be in contrast to the object being worked on.
Glare can also be a problem.
Try for maximum contrast while minimizing glare with a textured surface. Equipment Traditionally we have asked workers to work with whatever piece of equipment the engineers developed. We must now strive to modify the equipment rather than the worker. There used to be only young workers on the production lines and as medical assistants. Now, industry and many other professions does not hire as many young workers, and the older workers must continue to do the physically stressful jobs.