Does Time of the Day Impact Moods at Work?

Photo: Monday again

It’s probably safe to assume that most, if not all, of us have at one time or another, wondered whether our moods are influenced by the time of the day or the day of the week. Well, wonder no more.

According to Robbins and Judge (2009), people are more likely to be in their worst moods (i.e., highest negative affect and lowest positive affect) early in the week and in their best moods (i.e., highest positive affect and lowest negative affect) late in the week.

What about time of day? Does it make any difference if someone is a “morning” person versus another who might be an “evening” person? Robbins and Judge said that no matter what time we go to bed in the evening time or when we wake up in the morning, our levels of positive affect peak about midway between the time we wake up and the time we go to sleep.

Watson (2000), in his book “Mood and Temperament,” said this:

“Although different people reach their acrophase [peak time or time at which the peak of a rhythm occurs] at different times and show somewhat different curves over the course of the day, our analyses have demonstrated that this basic circadian rhythm—that is, low Positive Affect at the beginning and end of the day, with a peak occurring somewhere in the middle—is remarkably robust and generalizable across individuals” (p. 116).

What implication does this have in the workplace? Well, as many of us can already confirm, Monday morning is not a good time to deliver bad news. And in terms of time of the day, employees will tend to be more positive from about midmorning going forward and (certainly not surprising) later in the week.


Robbins, S. P., & Judge, T. A. (2009). Organizational behavior (13th ed.). Upper Saddle River, NJ: Pearson Prentice Hall.

Watson, D. (2000). Mood and temperament. New York: The Guilford Press.