Spanish Adaptation of the Intensified Job Demands Scale (IDS).

Background: The Intensification of Job Demands Scale (IDS) is a multidimensional instrument designed to capture the phenomenon of work intensification that characterizes modern Western societies. However, in Spain the instrument has not been validated to assess this phenomenon. The aim of this study was to examine the psychometric properties of the IDS adaptation with a heterogeneous sample of Spanish workers.

Method: The sample consisted of 722 Spanish workers (57.8% female, 42.2% male) who completed a survey between January and April 2022.

Results: A five-factor correlated model, as in the original IDS, had an optimal fit with 15 items, and displayed invariance across gender, level of education, and organizational tenure. Reliability coefficients were all satisfactory, and scale adaptation showed evidence of convergent, discriminant, and incremental validity.

Conclusions: The Spanish adaptation of the IDS is a valid, reliable measure for analyzing the phenomenon of work intensification and intensified job demands in Spain.