I don't think they can use your stutter as a reason not to hire you. Pretty sure it's covered under the disabilities acts in some places. My stutter has never been as bad as it's been this week. I've been unmotivated the last 2 months, applying like crazy, but I feel depressed and unmotivated because Bills need to be paid and all that stuff and my lack of funds isn't helping. Been really bad. I was literally unable to speak without making the strange stutter noises I make. Honestly, long as you do the work and they're happy with your work, they shouldn't have reason to complain