Objective:

To identify nurses' knowledge and practices about the occupational risks found in the primary health care units studied; And to evaluate the impact of the educational intervention on the nursing practices and knowledge of the experimental group.

Method:

Quasi-experimental study with design pre-test/post-test with non-equivalent control group, with quantitative approach. The study was developed in two units of primary health care in the city of Niterói, with 14 participants. Two questionnaires were applied in September 2015. The work is approved by the Ethics in Research Committee.

Results:

It is found a strong positive correlation between the implementation of educational intervention and improvement of knowledge (r = 0.858) and change in preventive practices (r = 0.992) about the occupational risks by nursing professionals in the experimental group.

Conclusion:

The educational intervention constitutes effective strategy for the acquisition of knowledge and promotes the adoption of preventive practices.

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