The phrase "backs to the salt mines" is often used to describe a return to work after a period of rest or vacation. Antonyms for this phrase would include "free time," "leisure," "relaxation," and "vacation." These terms imply a break from work or responsibilities, a chance to unwind and recharge. "Freedom," "unburdened," and "carefree" are also antonyms that offer a sense of release from the stress of daily life. Instead of working diligently at the salt mines, one might be lounging on a beach, exploring new sights or hobbies, or simply enjoying the company of loved ones. These antonyms represent a shift in focus toward self-care and enjoyment.