What can result from changing an established work schedule?

Changing an established work schedule can significantly impact a person's circadian rhythms and overall sleep patterns, which can lead to fatigue and reduced alertness. When individuals are accustomed to a particular routine, abrupt changes can disrupt their biological clocks, affecting their ability to function optimally. This disruption can result in feelings of tiredness and decreased cognitive performance, making it harder for individuals to concentrate, remain alert, and perform their job effectively. As a result, the likelihood of experiencing fatigue and diminished alertness is high when a work schedule is altered, making this the correct and most relevant outcome of such a change.