This is a banner template to indicate that more work is needed on the article. Not to be confused with Template:Job, a semantic template for assigning jobs to people.
It places a left-aligned block of text with grey border and light blue background. It has just the one parameter which is the text to be placed. Copy and past the following to use the template, then replace 'TEXT' with the text to be highlighted:
The result will be as shown below with your text replacing the curly-braced parameter.