Some countries like New Zealand and Australia offer working visas to people aged between 18 and 30. The options for finding work for people over 30 in these countries is much more limited.
Teaching English is another option favoured by many people and various countries including Thailand and Japan offer schemes to suitably qualified individuals. There are many TEFL websites on the web including TEFL.net which offers teacher resources, lesson plans, a forum, jobs via email and a TEFL wanted section.
Volunteer work can be highly rewarding on a personal level through helping people , animals and the environment in areas of the world requiring help and assistance. Volunteering can also offer a chance for change if your current work situation is less than enthralling. Volunteer work can be a great opportunity for people leaving education or taking a travel during a degree course. New skills and experiences can benefit a volunteer working in another country where the way of life may be completely different. For information on volunteer work, try VSO, United Nations Volunteers and WorldWide Volunteering