The Job prospects are to be seen from 2,6 and 10th House in the Birth Chart. These houses control the Service or Job as a Career.
If you look below table , you can see which houses are controlling the job prospects.
We have to see in the Birth chart the connection with these houses of any person. When the period or what we called as Dasa of the planets sitting in these houses or lords of these houses come, Job can be predicted. If a person wants to do the Business then 7,10,11 should be seen. we generally do not take 2nd house in Business prospects because it is 8th (Vinaash or destructive house) for the Business .
Various planets and their combinations give different kind of jobs