According to a study by the Massachusetts Institute of Technology, humans work better with robots. While you'd normally expect that humans wouldn't take well to the help of a robot, the MIT researchers were shocked to discover that we're actually happier when collaborating with a robot teammate.
The study placed two students with a robot that had varying levels of autonomy. The human/robot team was tasked with fetching and assembling parts. Teams had a robot that had either full control over their team's organization, no control over the team, or controlled all but one member of the team.