A Spanish version of the Three-Dimensional Work Fatigue Inventory (3D-WFI): factor structure, internal consistency,...

Area of Science:

• Occupational Health Psychology
• Psychometrics
• Cross-cultural Adaptation

Background:

• Workers face physical, mental, and emotional overload risks.
• No Spanish instrument existed to measure these three types of work fatigue (WF) distinctly.
• The Three-Dimensional Work Fatigue Inventory (3D-WFI) was adapted from its original American version.

Purpose of the Study:

• To adapt and validate the 3D-WFI for the Spanish-speaking working population.
• To assess the psychometric properties of the adapted 3D-WFI.
• To explore the relationship between work fatigue and antecedent/consequent variables.

Main Methods:

• 1100 workers from diverse sectors (security, education, healthcare) participated.
• Participants completed the adapted 3D-WFI, Quality of Life Index, and Individual Strength Checklist.
• Confirmatory factor analysis and correlational analyses were performed.

Main Results:

• Confirmatory factor analysis supported the three-dimensionality of the 3D-WFI.
• Adequate reliability (Cronbach's alpha and Omega) was found for all three dimensions: physical (α=0.92, Ω=0.92), mental (α=0.94, Ω=0.94), and emotional (α=0.95, Ω=0.95).
• Significant correlations were observed between WF dimensions and antecedent/consequent variables, including health and absenteeism.

Conclusions:

• The adapted 3D-WFI is a reliable and valid instrument for assessing work fatigue in the Chilean and potentially Latin American working population.
• Predictor variables for work fatigue were confirmed.
• Work fatigue significantly impacts absenteeism, health, and quality of life.