Ha ha ha!! All dogs think they have a "job" and Walter takes his responsibilities very seriously.
Meanwhile, Jack's job is to see how many times a day he can get underfoot! He's a 4-legged blockade and we're constantly telling him to move out of the way, or we push him aside. I mean he'll plop himself directly in front of wherever you want to walk. Then if you walk over to open up a cabinet, for example, and then step backwards, you end up standing on his paw--because he also plops himself directly behind you, if you stop even for a moment. Stalking behavior?