I always have Katie on a leash while working. This is for her safety. Most of the time she wears both a harness and a collar. Just like people, she has different gear for working in different weather conditions – a life jacket, boots, sweaters, blaze orange vest, backpack, etc. To Katie, there is no difference in working and playing. I continually use the same gear, commands, and rewards for both play and work. This keeps working fun. We always have to be ready for impromptu work too, this means not always having the right gear with us, but following the same commands.