Difficult to see what the question is here jaydah. If the options are (a) placing funds in an interest earning savings account, or (b) paying principal off a mortgage - there are two things to consider.
1. If the interest earned after tax is less than the interest payable on the mortgage, then (b) is the answer. BUT
2. Check with the mortgage lender to ensure there is no penalty for early reductions. If there is, find out at what point such a penalty does not apply then put funds into a call-savings account and withdraw timely to reduce the mortgage.
I don't think being employed, or not, has any bearing on this decision. The only real decision is whether you may have immediate future need for the funds as once they are used for the mortgage they are gone.