My experience in NPD (New Product Development) is that this article applies pretty much exactly as written, since the NPD part of a NPD project is more or less 100% subtractive.
Additive work really has a certain 19th- or 20th-century feel to it. It often involves a clock ("my job is to be the receptionist for these 8 hours") or basket ("my job today is done when I've filled/emptied this basket of TPS reports"). The car assembly example from the article is of this type: the job is to fill the (not actually physical) basket with as many cars as possible, in a shift.