Madrid: Fears of losing a job erodes commitment to work, besides casting a shadow over many areas of life, including family, health, finances and leisure, a study reveals. As the fear of unemployment increases, "the level of work insecurity rises, people are less satisfied with their personal, work and family lives and they are less committed to their work," said Amparo Caballer, psychology researcher at the University of Valencia, who co-authored the study. This analysis also reveals that the consequences of job insecurity are different in each occupational group, the Spanish Journal of Psychology reported. Three different groups have been identified: blue collar workers, white collar workers and 'professionals'. The first group included people with positions that do not need high qualifications, such as supermarket shelf-fillers or hospital attendants, according to a university statement. The second group includes office and administration workers and supermarket assistants and check-out staff. The 'professionals' group includes doctors, engineers and nurses. When there is uncertainty about employment, blue collar workers "are less satisfied with life and they work less productively than the other groups studied", Caballer explained. White collar workers are the ones who display the most dissatisfaction at times of instability. Upon examining the results of the study, not all employees react to insecurity in the same way. Some groups are more prone to react more negatively to perceiving insecurity at work. Therefore, the study authors advise against approaching the problems in the same way as with different groups in the company. The data was based on 321 worker's answers to a questionnaire, which includes 51.4 percent people who worked in hospitals, 25.7 percent had positions in supermarts and commercial distribution companies and 22.9 percent were temporary work agency employees.