Objective to translate, adapt and test the psychometric properties of the Brazilian
Nurse-Work Instability Scale.Method this was a methodological study following the translation steps: synthesis,
back-translation, specialist´s committee, semantics analysis, pretest, and
psychometric tests. The committee was composed of 5 specialists. For the
semantics analysis, 18 nursing workers evaluated the instrument and 30
pretested it. For the psychometric tests, the sample size was 214 nursing
workers. The internal construct validity was analyzed by the Rasch model.
Reliability was assessed using internal consistency, and concurrent validity
with Pearson’s correlation between the Nurse-Work Instability Scale, and the
Work Ability Index, Job Stress Scale.Results a Nurse-Work Instability Scale in Brazilian Portuguese with 20 items showed
an adequate reliability (0.831), stability (p <0.0001), and an expected
correlation with Work Ability Index (r = -0.526;
P<0.0001) and Job Stress Scale (r = 0.352; p
<0.0001).Conclusion the instrument is appropriated to detect work instability in Brazilian
nursing workers with musculoskeletal disorders. Its application is
fundamental to avoid long-term withdrawal from work by early identification
of the work instability. Furthermore, the scale can assist the development
of actions and strategies to prevent the abandonment of the profession of
nursing workers affected by musculoskeletal disorders.