I got my little Bella when she was 8 weeks old. I took her to work with me for the first week only so we could bond together. I work in an office and my boss was totally cool with it. After that she was home while my husband and I work from 8:30am to 5pm.
But I am gone 9 hours a day and I leave her in a large excercise pen that takes up one whole wall of my kitchen. It has her indoor potty on one side, her toys in the middle with her dry food and treats and water and her bed on the opposite side. She does not starve. The breeder also free fed the puppies so Bella was used to that. Now that Bella is 5 months old she waits until I get home to feed her dinner but if she is really hungry she will eat from the dish that is left in her excercise pen. I leave the radio on for her during the day. When I get home I pretty much play with her from 5:30-10pm at night. It can be tiring but I give her LOTS of time to play with me when I am home. She gets 100% of my time which sometimes annoys my husband because he wants attention too.
Plus my hubby and I take her in the car with us at night and weekends. She goes everywhere with us unless its to the store then one of us stays in the car with her.
Bella is now 5 months old and does not have separation anxiety. But she does know if I am 30 minutes late, they have this internal clock going on I think. lol She lets me know by talking away at me (balling me out) when I get home until she settles down a bit. But if I get home right on time she is fine and I take her food bowl out and make sure she eats and we play for the rest of the night in between cooking dinner for the hubby.
13-14 hours does seem like alot of time away but I would make sure you spend alot of your time when home playing with her and take her everywhere with you like I do when not working.
Also I had to totally re-arrange my wake up time. I get up two hours early now so Bella can play a good hour to an hour and a half out of her excercise pen in the morning before I go to work. So I wake up at 5:30am spend 45 minutes getting ready for work and I am downstairs with her from 6:30am until I leave at 7:45-8am. So I no longer get 8-9 hours of sleep anymore and had to adjust to 6-7 hours of sleep at night.
So far Bella is the sweetest little doggy I could have ever asked for. She LOVES people, other animals and is VERY social. And per my neighbor she NEVER barks while I am gone. She is not a yappy dog thank goodness. lol
I think dogs will adjust to every owners schedule and be just fine. Lots of love and attention when home will make up for alot. But thats just my two cents.