Abstract. Although dynamics within and outside organizations emphasize the importance of employee adaptability, a validated scale that assesses employee adaptability as an individual difference construct is still lacking. Five studies were conducted to develop (Study 1, N = 235) and validate a 10-item scale for employee adaptability and investigate its factor structure and measurement invariance (Study 2, N = 331; Study 3, N = 375), convergent validity and discriminant validity (Study 4, N = 117), and concurrent validity, predictive validity, and measurement stability (Study 5, N = 263 T1, N = 113 T2). Overall, the findings revealed good internal consistency, convergent, discriminant, concurrent and predictive validity, and adequate measurement invariance. Potential applications for the adaptability scale are discussed.