If those efforts fail, see whether you can organize your shifts so every manager gets a periodic "easy" week. It's not ideal, but it beats running on all bald tires.
Your bosses may just exhort you to do more with less, as too many employers are doing now. If so, they also may find out come busy season that workers running on fumes tend to break down just when they're expected to pick up speed.
Thanks to Elaine Fitch, of the Washington-based Kalijarvi, Chuzi, Newman and Fitch employment law firm.
Karla L. Miller writes an advice column on navigating the modern workplace. Each week she will answer one or two questions from readers.