Example Letter Of Application For License Of Company I Need An Example Letter To Give To My Boss That I Am Getting A Second Job?

I need an example letter to give to my boss that I am getting a second job? - example letter of application for license of company

I will start a second job and I want to be as professional as possible .. I will work one day a week, but I give them a letter in what I need. Please give me someone is a good example. Thanks