puppy left alone

hey guys next week i wont be able to come home from work and check on my puppy the whole day, what should i do? regularly i come home after i leave in the morning and i can take him out feed him etc... but for 3 days next week i wont be able to, i dont wanna leave him in the crate for that long knowing he might have an accident, should i just let him loose in the backyard and leave him food and water?? stupid work

yes i will be gone from 7am - around 4:45pm i know he wont be able to hold it in that long :( i may just let him loose in the garage i dont care so much about him peeing but when he does #1 he sometimes run over it and spreads it around, hmm i guess ill try the crate, thanks