The aim of diis study is to evaluate a predictive model of acute posttraumatic symptomatology (PTS) and post-stress growth (PSG) in workers who suffered a recent work accident. To this end, 246 workers (23.2% women) were surveyed, aged between 18 and 73 years. The main predictors of PTS were subjective severity of event, negative religious coping, positive reinterpretation, and intrusive, brooding and deliberate rumination. At the same time, the main predictors of PSG were deliberate rumination and positive religious coping. A path analysis was performed to evaluate a model in which intrusive and deliberate rumination fulfill a mediating function, obtaining adequate goodness-of-fix indices. The need to have a method of early evaluation of psychological responses after an accident is proposed.