Being transparent with your employer as soon as you can will also help everyone. In my situation, I was clear with them from day one when I picked up my first client. I kept an open line of communication as to how quickly or slowly I’d need to progress with my outside business. That way they were able to find my replacement and I was able to spend 4 weeks with her training and reviewing the job duties. That was incredibly helpful to my replacement, my employer, and to me knowing everyone was in good hands.