Background: There are no available data on the health consequences that may result from the synergistic effects of electromagneticfields (EMF) and stress. Understanding the mechanisms of the simultaneous exposure will make it possible to developprocedures to minimize adverse health effects in professionals using mobile phones. Material and Methods: A questionnairesurvey was conducted in 600 randomly selected people to obtain data on their health status and the prevalence of subjectivesymptoms related to the mobile phones using. Among them, there were 208 GSM Network employees, to whom the PerceivedStress Scale and Assessment of Stress at Work Questionnaire were sent. Eighty-nine completed questionnaires were returned(response rate – 42.8%). Results: The mean age of respondents was 30.3 years (standard deviation (SD) = 7.7), time of occupationaluse of mobile phone – 4.1 years (SD = 1.7), the level of occupational stress – 95.3 (SD = 19.1). A significant percentage ofpeople (62.8%) complained of the frequent difficulties in coping with problems of everyday life, and 57.4% had a fairly frequentproblems with managing their own affairs. Significant differences in the life stress were detected between groups with differenttime of phone use (p = 0.03), and in occupational stress level, significant differences were noted between the 2 groups differingin the length of the conversation (p = 0.05). The risk of headache, associated (odds ratio (OR) = 4.2, p = 0.008) or not associated(OR = 2.97, p = 0.04) with calls on mobile phone, adjusted for stress, was significantly higher in people speaking via mobilemore than 60 min/day than in those talking less. Conclusions: The study indicates that both stressors acting at the same time (EMF from cell phone and stress) adversely affect the well-being of workers and increase the risk of subjective symptoms.Med Pr 2017;68(5):617–628
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