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ergonomics is the study of the relationship between people and the things they use it concerns making products and work areas efficient comfortable and safe to use with respect to computer ergonomics covers the effects on workers of various computer related equipment repetitive strain injury refers to the injuries caused by performing the same types of physical movements over and over again in the wrong manner the common complaints from computer operators include pain in the arm back shoulders wrists hands blurred eyesight and eyestrain electromagnetic radiation also harms computer users internet addiction causes social problems such as impairment of real life relationships telecommuting is a work arrangement in which employees work away from a standard workplace the staff members often works at home and he can still communicate with colleagues and supervisor by using intranet and video conferencing working hours are flexible work monitoring is usually done by evaluating the end product which must be completed before a deadline