A – Watan
B – Job Location (more than 4 farsakh from A)
C – Non-Watan (No intention to stay for 10 days. It is also more than 4 farsakhs away from B, the office)

1. If I go from C to B location to attend my office on a daily basis, will I pray qasr or tamaam?

2. C location will be qasr, I believe?

3. If I reach B (office) before Zuhr, can I also fast there?

If your permanent job is this then your namaz in all places will be full means four rakat and you travel three days is week minimum