Master of Occupational Therapy (MOT). However I am not sure whether there is another way depending on the degree taken at a particular college or university. Thus, the signature would be, John Smith M.O.T.
It depends on what masters area you graduated from. In other words, if the degree is a masters of arts, then John or Jane Doe M.A. If the degree is a masters in science, then John or Jane Doe M.S.
It depends on where you graduated. There is a number of abbreviations for a master's in education - once again - depending on where you graduated from. Common to this field are the following.
M.Ed....
College degrees can be listed after your name, in formal circumstances, using abbreviations.
BA for Bachelor of Arts BS for Bachelor of Science MA for Master of Arts MS for Master of...