I really enjoy Body Fusion. I think it's a great workout to give a beginning Catheite a broad look at how her workouts progress. I've been working out for a while, so I don't consider myself a beginner by any means, but I learned the footwork quickly and still felt challenged cardiovascularly. I wasn't out of breath, but I worked up a nice sweat. It's a great workout for someone just starting out, IMO....and I will occasionally write this into my rotation for a light workout during a heavy week, just in case I don't feel up to doing higher intensity.
Has your coworker ever worked out or will this be a whole new thing for her/him? Your coworker shouldn't feel bad if they have to stop the workout halfway through a few times. They may need to work up to doing it "full length" (that's what I did with Step Blast - I broke it into segments to learn it and get used to the intensity - and now I can zip right through the whole thing without stopping). You should encourage your coworker to only work out for 15-20 minutes for the first few times if they've never worked out. As they feel more able, they can increase their workout duration. But doing too much too soon is the surest way to make them stop exercising.