The modern workplace spans continents—but the human body still runs on a clock. As organizations assemble global teams across time zones, collaboration has become theoretically seamless and practically exhausting. Meetings drift into odd hours, sleep cycles fracture, and productivity quietly competes with fatigue. Behind the language of “follow-the-sun” efficiency lies a more complicated reality of coordination, compromise, and cognitive strain. This essay explores the hidden costs of time-zone work and what global organizations rarely acknowledge about the human limits of a borderless workplace.