I am going to be pedantic here, unique means one of a kind and then you say "not much literature" so there is some :)
Sounds like you have a good subject if it is unresearched. I am sure there is a lot written on WLB you now have to apply your perspective to it. My advice would be to decide what aspect you are going to focus on, it's very easy to bite off a lot. That will tell you what you plan to not investigate. So your introduction chapter is nearly complete - why you chose this, what specifcs you intend to research and what you have discounted.