Safety harnesses are required under Irish law when working on an elevated platform or up at any height. The airport authority in Dublin is enforcing this due to large amount of building going on.
I have been made stop working on a Pylon even though i was on steps. With the enforcement a change in culture is slowly happening.
However wearing a lanyard or harness is not going to work in my opinion. It may work with running engine on stand, but while pushing and starting aircraft for departure, not a hope it would work.
My reasons for this are i'm not going to let anyone tell me that i should be attached to aircraft with harness for a departure, and also i'm not going to be attached to tug either. There is a lot of pro's for a harness however there are many more of negatives.
The Ramp is a dangerous place you need eyes in the back of your head sometimes. Sorry ALL OF THE TIME.