Salaries & Working hours Forecast

Using historical data of employees working hours to forecast the values for the future, using these quantitative forecast models:

1- ETS model

2- MA model (4 weeks)

3- WMA model (with different weights for each week)

4- Exponential smoothing. (with different smoothing values)

Then calculating the error between the actual values and the forecast to determine which model is the most relevant to use in the future.