How to politely tell your job to pound sand...

Dear Cup Above Management and Staff,

As of Monday, August 9th, this letter serves as my two weeks’ notice to conclude my employment with The Cup Above, my final date of available scheduled work time being Monday, August 23rd. Should management decide to terminate my employment prior to that date, I will respect that decision with no ill will. I have performed all duties assigned to me to the best of my abilities and have come to the decision that this is not the area of work I’m willing to dedicate myself to long term. The diminishing scheduled work hours are not conducive to my financial needs, the basic operation of the business is run too inefficiently in my opinion, and I feel my qualifications would be better used elsewhere. I am confident management will find a suitable replacement or divide my shifts to my fellow employees who need the hours. I appreciate the opportunity to try and help build a new business from the ground up and will take these experiences into the next phase of my career search.
Sincerely,

Amanda Hill

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It's a shame, it looked so promising in the beginning. And what's a total bummer is I really like the people I work with, and most of the customers. It's just run too inefficiently, and they just promoted a girl to manager so now it's going to sound like that's what made me pissy, and it's so not! But I can't take it anymore. My schedule for this week is a total of 9 hours, with the probability of being less because the owner sends someone home if business is dead. And business has been quite dead as of late. So $8.00 an hour (let's ignore the fact I got the petty raise along with another worker) and so the math: $8 p/hr x 9 hrs = $72. And that's before taxes and all that fun stuff. And without getting sent home early. Now it takes about $80 a week to fill up the truck's gas tank, and it's doing double duty because sometimes Mike's schedule isn't cohesive with mine. When you look at it in a general manner, we're SPENDING money for me to work at that place. Let's not even mention the mental waste. So even if another job doesn't come along as quickly as I'd like, at least I can have peace of mind and not being wasting precious gas. I can be a damn good employee, but I will not be taken advantage of.