In this study, we anticipated work center size as a factor facilitating workers’ knowledge of SRs’ existence. Also, in the literature there is a well established relationship between firm size and occupational health and safety activity, as well as size and SRs’ presence . However, despite we observed a similar association between work center size and preventive action at a bivariate level, work center size lost significance when knowledge of SRs’ existence was introduced in the model. The same result held true when alternative models were tested. A possible explanation for this result is that since
our sample did not include the smaller work centers (from 1 to 5 workers) – thus being limited to workers who could haveSRs – the impact of size might have diminished.