hi there... i am currently in japan on a working holiday visa without a degree having the teaching qulification will help you get a job tho. so i thought id list a few places that will take people on without a degree Gaba although transport and training isnt paid ( 3 days) choose your own hours but its comission paid its weather you get the lessons but when you create your profile mention your certificate because japanese people are crazy for it,and you will get booked!!
other places are berlitz i think take on part time working holiday visa people and pay quite well.
findateacher.net for private students.
when you get to japan the main site people advertise for jobs is on http://www.gaijinpot.com
how ever you have to be currently residing in japan.
also another handy site is the metroplis its the number one english site for foeginers check the spelling google metroplis japan and it will come up i always forget how to spell it but thats what i google lol ...
you will also find other small schools and part time work...
p.s if you have 3 years or more experience in teaching and work full time in a company its possiable to be sponcered for a work visa without a degree.
best of luck i hope you enjoy japan finding work isnt difficult although you do need to find a computer and have a suit or two lol