Over the last few decades Qatar has made a concerted effort to provide a world-class educational environment for its people and so has many attractive contracts for TEFL teachers. As with other countries in the Gulf region, the tax-free salary* lures teachers who couldn’t dream of earning the same amount at home. The capital city Doha has a wide range of organizations you can join such as the rugby and sailing clubs as well as the Hash Harriers or Natural History Society which may help explain why a lot of teachers stay for year upon year.
*Unfortunately, this does not apply to Canadians who are taxed at home, but often the salary factors this in to the final package.