When it comes to describing someone who is always hard at work, there's no shortage of colorful idioms to choose from. While "busy bee" may be a classic way of expressing someone's industriousness, there are plenty of other synonyms to consider. For instance, you might call someone a "whirlwind" if they're constantly in motion, or a "workhorse" if they're tireless in their efforts. Other options might include "go-getter," "hustler," or "energizer bunny." No matter which phrase you choose, it's clear that these words all share a common theme of hard work, determination, and dedication to achieving success.