Yes and no. It all depends on the nature of the job. I can stop if a child just wants to talk or I can work while having a conversation (depending on if I'm running a machine or doing handwork). But I also have dangerous machines and tools out where little kids can get hurt. If I walk away from the work area in the kitchen, I have to make sure that everything is make safe. A dedicated room where I can leave everything out would help but would also cut down the amount of time I can interupt working.
In general, working at home means that the adult is at home but not necessarily available to the child. Something that kids don't always understand.
The truth may be out there but lies are in your head. Terry Pratchett