Welcome Imabuleva, can relate firsthand to your situation. One of the best P. Eng's I work with is in the same boat, flawless detailed work, but if you need to talk to him after 12:00pm better try him on his cell, because everyone knows he is at the pub. Need him after 2:00pm? Send him an email because he won't do anything with it that day, and when he deals with it in the morning it will be right. Almost like all his professional contacts are enabling him, because we know his routine. And if wondering why he hasn't been let go for only working half the time, well, it's his name in the company logo.
You'll find your situation is similar to many others, keep reading, and hope you stick around.