It's definitely a foot in the door.
The companies that I work for that Advantage resourcing dealt with didn't reward hard work but they did reward politics which in the United States I thought wasn't the way things worked. I thought the harder you worked in the more production you put out. The more you would advance but that was not the case whatsoever and I complained about it numerous - more... times. - less
ConsYou get nickeled and dimed.