Agree with the others that working will not be a problem. They do sleep a lot initially. DO NOT make the mistake of taking 2 weeks off work to settle the dog in. A couple of days/longish weekend at most then do as you normally would tapering a bit at the last day or so. That way you do not create a problem of expectation for the pup but the pup has time to know this may be ok.
Interaction etc before you go to work, someone in at half time to do a feed and spend a little time, time, exercise with you when home sounds great to me. Later on, bones help and remember that dogs adapt well to whatever their situation is when eased into it. I once had a small dog alone 9hrs a day (in a city)..he was in and out of a dog door to a courtyard as he wanted, neighbours reported no problems.
Everyone's situation is different, the way they mould the dogs to fit in. I could not do that anymore in my different situation with this brat pack which is a whole different rural scenario.