I work for a small remodeling company. I am the guy who drives the van, picks up all the materials, cleans up the jobsites and takes trash to the dump, and helps out with grunt work whenever and wherever I can. Whenever I take vacation days, my boss hates having me gone because none of that stuff happens (or happens at a much less efficient clip), but appreciates that I use my well-earned vacation time, with the attitude of "Have a great time, don't think about work, we'll figure out it." Because that is what management/ownership is supposed to do.