This research aims to verify the psychometric caracteristics of the French Canadian version of the Stress Appraisal Measure (Pelchat, Ricard, Lévesque, Perreault & Polomero, 1994) with subjects actually living an ongoing stressful situation. The original English version of the instrument was designed and validated by Peacock and Wong (1990) for measurement anticipatory stress appraisal. This study was conducted with a sample of 1458 nurses living uncertainty regarding their job status. The uncertainty regarding the job status was seen as a stressor. Principal component analysis with varimax rotation showed a five-factor structure instead of six-factor structure prescribed by the theoretical framework. Internal consistency coefficients for the six dimensions range from .65 to .89.