Stress

You'd think making a cool, refreshing product like beer would be...cool and refreshing. Sometimes, it is. Other times, when you've been working for twelve straight hours next to a 150-degree Fahrenheit vessel of water, which then needs to be cleaned by heating it to 1,500 degrees, well, it can get a little stressful.

 
Just don't drink all of that in one sitting. (Source)

Need to release some stress? Even if you get off work at 3:00AM, you don't need to worry whether the bars will still be open. You work in a giant beer tap.