The advantage of this is that you can try out learning information and methods from another field to see if studying it further would interest you.
If you're unsure where to start, or don't know what sort of project would be appropriate for your course, it's a great idea to look at previous students' projects.
In most universities you'll be able to access previous student theses in the library, so you should take advantage of this resource.
Get more specific, and your project will not only be more manageable, but you will actually get to the crux of something.
Instead of simply scratching the surface of a more general topic - which is often quite unsatisfying - you will be able to call yourself a 'master' of a subsection of it.
Your project could look at the implications of that same policy in a different country.
Or you could look at a similar policy in a different period of history.
If you work in economics but find yourself interested in another academic subject, you may have the opportunity to learn about that field as a part of your research project.
You could consider a project which touches on a subject like history, sociology, business, politics, or psychology, for example.
One of the biggest and most exciting challenges of a young academic's career is coming up with that first research project.
Knowing how much is riding on the decision, it can also be pretty stressful.