Background: I am working in a mid size company and I am a software/Web developer. The IT team is really small (just me and my team lead). I am fairly new to this organization (40 days to be precise). I do software programming/coding, handle IT requests, etc.
Now before joining here, I applied for a part time position at a global banking organization. I have got an offer letter about two weeks ago from this bank. I am required to work only 10 hours a week. I work six hours on a Saturday, which is easy because my company only works from Monday to Friday. However, I need to take four hours off on Friday afternoon every week. The first week, I took a personal half day off. But I can't afford to take one every week nor will my employer take it lightly.
I really want to do both jobs. I love this company. But I also want to work there as it is something I have wanted to do for a long time (understanding how a banking organization works). It is also an opportunity I can't let go easily.
Now my manager at the branch understands my situation perfectly. I was very honest about this in the interview. I told them I already have a full time job and that it will be difficult to make it every Friday afternoon. She said it is ok to work only on Saturdays for now, but she would really appreciate it if I can make it on Friday afternoons as well.
However, I myself want to work on Friday afternoons there. I am more than ready to work the extra four hours mid week. However, my employer might not take that well. Also, the fact that I am new here certainly doesn't help.
How do I tell my main employer about this? How do I convince him that I need half day off every Friday, without affecting my schedule here? What reason should I give him? I am thinking that if I told him I am working in another organization, he wouldn't take it too well.