The aim of the present study is to analyse hardiness as a moderator variable among personality traits,
assessed using the Big-Five or Five Factor Model (FFM) and responses in work effort of workers confronted
with stress. Using a multi-occupational sample of 403 subjects, statistically significant correlations
between the factors of the FFM and work effort were found, as well as between hardiness and
effort, as predicted by the theoretical model. Finally, empirical evidence indicates that hardiness performs
a moderating role between the factors of FFM and effort displayed, in the sense that hardiness
(understood as a quantitative variable) affects the intensity of the relationship between the structure
of personality (predictor variable) and work effort (criterion variable), that is, even taking into account
that personality structure affects work effort, people who score high in hardiness will show more effort.
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