There is an increasing debate about who should fund post-secondary education. Students frequently benefit in the long-term by earning as much as 20% more during their working lives, but it often takes many years for them to see this benefit. Higher-level qualifications also enable greater mobility in the job market, including more opportunities to work abroad. Countries also can benefit from having a more highly skilled workforce, though supply of certain skills may exceed demand leaving many "underemployed." Due to reductions in government funding, students in many countries increasingly have to pay for their education. Though this is yet to significantly restrict access to education as has been predicted, it does mean many students leave education with large debts.Over a lifetime, students who have stayed on in post-secondary education earn on average 20% more than those who have not.- watson glaser