The causes of a job transfer request may be manifold. It may happen:
There is also the case when an expatriate wants to return to his/her country of origin to school the children, get medical care, or due to insecurity, for example.
Please note that when the transfer request is made in relation to a vacancy within the organization, it is important to apply to that position in just the same as if you were applying for a job outside the company, i.e. by sending a complete job application (sample documents).
Here is a sample job transfer request that was triggered by personal motives. Note that, in this case, it is important to be transparent and clearly state the reasons behind your willingness to be transferred. Also, you will gain from avoiding overstating the benefits the company will get out of your transfer.