When you’re working you probably want to remove every distraction that keeps you from being focused. For some people that includes hiding the Dock as well.

Hthe-dockere is how to hide the Dock in Mac OS X:

You can hide it easily by clicking on the Apple menu in the top left corner of your screen, and then selecting Dock -> Turn Hiding On.

This will instantly hide your Dock; however, keep in mind that when you hover over the Dock area with your mouse it will temporarily popup again.

Alternatively you can hide and reveal it by pressing Command + Option + D.

 

Hiding the Dock can give you additional screen real estate and remove the clutter, thus helping you remain more focused on your work.