I'm surprised by the PUWER 98 quote, only from the point of view that it says should and not must. It looks like a field day for lawyers when something goes wrong (underlines are mine):
"All workers who use a chainsaw should be competent to do so. Before using a chainsaw to carry out work on or in a tree, a worker should have received appropriate training and obtained a relevant certificate of competence or national competence award, unless they are undergoing such training and are adequately supervised. However, in the agricultural sector, this requirement only applies to first-time users of a chainsaw."
Rare
