Heaven vs Hell industrial dispute

An engineer doesn't have his driver's license on him when he dies and due to a bureaucratic stuff up at the pearly gates, ends up down in Hell.

Making the best of a bad deal he puts himself to work on various projects to make the environment more comfortable for all. He devises a suction device that removes a lot of sulphur from the atmosphere, puts in air conditioning to make the place cooler, does some plumbing so that fresh drinking water is readily available, constructs some rudimentary fire extinguishers and so forth. The Devil is delighted with the improvement in living conditions and makes the engineer his right hand man.

When God hears on the grapevine about how conditions in Hell are improving because of the engineer he gets very annoyed and places a long distance call to the Devil, demanding that the engineer be transferred back up to his rightful home in Heaven. The Devil has no intention of parting with his valuable engineer and tells God to butt out. "Okay", says God. "If you're gonna play hardball, you'll be hearing from my lawyer." "Oh yeah?", replies the Devil. "And where exactly do you think you're going to find one of those?"