Heavy machinery competency assessment Speaking from my experience working in the ski industry where there is tracked machinery (groomer/snow cats and excavators) and loaders, staff have always gone through an internal pre-season training and competency assessment, even if they worked back to back winters between hemispheres. Same thing with snowmobiles.
A risk assessment, identifying the frequency of work, machine, terrain, operators etc should assist with developing a training and competency plan. We implement something similar with our utv training plan and we do that all internally, as per the risk assessment of activities.
I have wheel and track endorsements, and the last time I operated anything remotely close to one of those machines was 5 years ago... I would hope to be trained and assessed before operating one of those machines again, despite having an endorsement that says I'm ok to do so.