One thing to consider is that ECT is done under general anaesthetic and requires 6 to 12 sessions, this might be over 4 to 6 weeks. As GA takes between 48 and 72 hours to clear your system you wouldn't be able to work operating machinery for that period. I would say, if you are well enough to work then ECT wouldn't be a good choice. If you are so disabled by depression that you can't self care, don't eat, don't get out of bed then it could be a life saver. I had ECT a long while ago when I was in a bad, bad way. I am tempted to ask for it again but I don't think I'm in that state yet.