Upon conducting extensive research...okay, I looked this up on the sims' wiki, I see that Harold and his female counterpart Jane Dotner seem to have much in common and being favorite household servants beloved by their employers doesn't sound like it's among their particular strong suits. Perhaps they should get to know each other and do something else with their lives, other than annoying those meant to be paying for their services.
If they really want to provide services to and annoy paying customers, they might be better off running a Resort on the edge of town or something. Could end up being a latter day version of Fawlty Towers if one wants to play through this. :)