“…Gamero (2007), when studying the type of contract on perceived job satisfaction, concludes that temporary contracts have negative effects on overall workers' satisfaction. From a general point of view, Dueñas et al (2010) point out that job satisfaction is the highest component for explaining labour relations at work, the type of work carried out, autonomy and job security. On the other hand, components with the lowest values of job satisfaction are non-wage earnings, the options of training in a firm and labour promotion.…”