There are numerous synonyms for the commonly used term "clock in," which means to start work or record one's time. Some alternatives include "punching in," "signing in," "starting up," and "logging on." Other variations include "getting to work," "beginning one's shift," and "reporting for duty." In certain industries, such as manufacturing or construction, the phrase "clocking in" may be replaced with "starting the machine" or "starting up equipment." Regardless of the terminology used, the act of "clocking in" or starting work is a necessary prerequisite for many jobs and industries, and the use of synonyms can provide a clearer or more specific understanding of the task at hand.