It’s helpful to know how many hours are worked in a year for a few different reasons. By being aware of this, you can:
Determine your yearly revenue
Knowing how many hours there are in a year of labour allows hourly workers to figure out their yearly income. You may find it simpler to plan and create a personal spending budget as a result.
Determine the hourly wage.
You might wish to determine your real hourly wage if you regularly work more than 40 hours per week and are paid a salary.
Source: https://www.accountiod.com/how-many-work-hours-are-in-a-year/