Introduction:

Occupational performance (OP) as an integrating concept allows the holistic assessment of the person and identifies the potential for the return to productive activity through the occupational concept as an input for the assessment of the loss of work and occupational capacity (LWOC), allowing an objective qualification of the aspects that constitute the Manual único para la calificación de la pérdida de la capacidad Laboral y Ocupacional (MUCPCLO, Spanish acronym for Manual for the qualification of the loss of labor and occupational capacity).

Methods:

A cross-sectional study was conducted with application of an OP evaluation scale to a sample of conveniently selected workers with alterations in body functions or structures, participation, or restriction at the occupational level. Analytical comparisons were made with the MUCPCLO scoring standard, and differential and integrating factors were identified.

Results:

Six subjects made up the sample, four had an occupational accident and two occupational diseases. In performance evaluation, 66% of the sample presented slight dependence on specific activities that lead to a differential analysis with emphasis on the MUCPCLO score. Specific factors were recognized, such as, objectivity of the assessment of occupational performance, multiple contributions of the concept of occupational performance, and possibilities of articulation with the manual.

Conclusions:

The prior assessment of occupational performance and the integral concept of the occupational therapist are constituted as a fundamental axis that contributes to the process of the assessment of the LWOC.