I still work full time and part of my job is to talk as well. I am lucky in the sense we don't get a lot of calls, but I do get some. Sometimes too much talking can bring on a coughing fit. I started out with portable tanks lugging them into work and it wasn't easy, but I did it. About 4 years ago I switched to the portable concentrator and that made a huge difference. I would carry the plug with me so when it drained, I could plug it into my desk at work. It feels awkward but afterwhile your co-workers get used to it and it becomes a normal routine. Yes, I still need to work for my insurance. I used oxygen 24 / 7. The choice is up to you.