what medical requirements are you required to meet for your job?

as a rail safety worker (locomotive and freight train driver) my job is deemed safety critical and requires me to pass a regular 'category 1' rail safety medical periodically. As im in y 50's its every 2 yrs. Prior to age 50 it's every 5 yrs then pver 60 it's every year. I do my next medical in a cpl of weeks.

https://www.ntc.gov.au/codes-and-guidelines/national-standard-health-assessment-rail-safety-workers