Heels worn all day damage feet, lower back, and produce daily fatigue. Backup flats kept under desk let you switch when comfort matters more than appearance — and most of office life, no one notices what's on your feet under the desk anyway.
What to keep at desk
Comfortable ballet flats or loafers. Same colour family as your usual shoes. Replace yearly as they wear.
When to switch
Long days. Days with significant walking between meetings. After commute. Periods of foot pain or recovery from injury.
Small workplace upgrade with significant long-term impact on foot health and daily energy.