You need to be ahead of all this before you buy the puppy. Where will the puppy sleep? If you have a 8 hour job, consider also, how long does it take you to get home. I have a 8 hour job that takes me a half hour each way. That means my puppy will be alone for 9 hours.
If you can, send your kennel for the puppy to the breeder. Then they can have the puppy sleeping in the kennel at night. Otherwise, buy a kennel that they will be able to use when they are full grown. I like to put the kennel next to my bed. I also like to give the new puppy a treat, like a dog biscuit, each time I put it into the kennel. By using a command, such as, "Kennel," each time I have it get into the kennel and close the door, it soon begins to mind very well. Should the puppy makes a fuss in the night, I can reach down with my hand and let the puppy know everything is all right, because the kennel is close. It is not wise to have a puppy running around the house all night as they are great at making real good messes.
After a couple of weeks, I leave the kennel door open to see what the puppy will do. If the the puppy wanders around and doesn't stay in the kennel when its time for sleep, I return to shutting the door for a few more days until the puppy understands. I have found that puppies soon learn the kennel is their own place.
When I leave in the morning for work, my dogs run to their kennels and lay down . I have forgotten something on ocassion and have had to return home, yet, not one of them came to see what I was doing. My dog's kennel are in my home office so they may be close to me and my computer. When I go down the hall to my office, my dogs beat me there and into their kennels to lay down. When I go to bed, my dogs find their own places and stay for the night.