Table 1. Operational definition of variables

Latent variables	Sub variables	References
Idealized influence	Safety coaching	· Wu (2005), Wu (2008)· Wu, T. C., Chen, C. H. and Li, C. C. (2008)· Cheung C. M., Zhang, R. P., Cui, Q. and Hsu S. C. (2021)
Individual consideration	Safety caring
Intellectual stimulus	Safety control	· Wu (2007), Wu (2008)· Wu, T. C., Chen, C. H. and Li, C. C. (2008)· Cheung C. M., Zhang, R. P., Cui, Q. and Hsu S. C. (2021)
Contingent reward	Safety reward
Inspirational motivation	Safety motivation	· Simard and Marchand(1997)· Zola (2002)· Wu (2007), Lu and Yang (2010)