I work full time, so does my fiance. Our schedules however worked out so Coco only needs to be left alone for about 5 hours, and only 3 days a week. Here was our 13 week old puppy routine (on a day off):
Wake up, potty. Come inside, eat. Play, potty, nap. Wake up, potty, play - maybe go to a dog park, or for a walk, practice training, potty, nap. Wake up, potty, come inside and watch tv or hang out, play, potty. Dinner time, potty, come inside and play, hang out and chew on something while I am on my computer, potty, bedtime.
Rinse and repeat
Notice the very frequent potty visits lol!!!
When she was young, at night she slept in her crate with a pen around for just enough room for there to be a puppy pad layed down. She used it occassionally, which was nice since I never had to worry about waking up in the middle of the night to take her out. Eventually I woke up over and over again to a dry pad, and she graduated to sleeping in bed with us at night!
Now we pretty much do the same routine, except we need fewer potty breaks and Coco has become very good at entertaining herself and laying at my feet if I am on my computer or busy.