Hi Edelady,
I can relate to your situation. I also missed a lot of work due to the crippling hangovers from the night before. I quit a really good job because I was terrified of being fired. My next two jobs I was actually fired. Missing work, hiding bottles, and day-drinking are signs of a serious drinking problem. I went to rehab and it saved my life. I hope you do something about your drinking now before things get worse.