What is the origin of the idiom "watch the clock" and when to use it?

The origin of the idiom "watch the clock" is rooted in the literal act of observing or monitoring a clock to keep track of time. The phrase has been in use for centuries and is derived from the practice of using clocks to measure and manage time. The origin of the phrase itself can be traced back to the widespread use of mechanical clocks in various cultures throughout history. It can be used in professional settings, such as workplaces, to remind individuals to be mindful of deadlines, meeting times, or project timelines.