Identifying the Quality of Work by Fuzzy Sets Theory: A Comparison Between Disabled and Non-disabled Workers

The paper assesses the quality of work of people with and without disabilities in Italy using the ISFOL PLUS (Participation, Labour, Unemployment, Survey 2010 Questionnaire, where the data refer to 2009. In particular, we develop a multidimensional indicator of quality of work within the fuzzy set theory. The results of the investigation show a different mechanism of determinants of quality of work for disabled and non-disabled people: while for these last ones seniority seem to highly contribute to the score of quality of work, institutional factors, like Law 68/99, whose aim is the regulation and promotion of the employment of persons with disabilities, appear to play a bigger role in the determination of the score for quality of work for disabled people. For medium and high levels of score of quality of work, education appears to play a similar role for disabled and non-disabled people, as the incidence of people with high quality jobs corresponds to people with a high level of education. However, for disabled people who are in low quality jobs the level of education appears to be irrelevant. Substantial differences emerge with respect to gender among disabled people, where women appear to be in higher quality of work scores than men; no substantial difference between genders emerges for non-disabled people.