Professional dart players James Lomas and Shawn McConnell were hired to play the two Nausicaans specifically for the scene where they throw darts at each other.
O'Brien's line "Have you any idea how bored I used to get sitting in the transporter room?" is a tongue-in-cheek commentary on the slightly ridiculous nature of his role on Star Trek: The Next Generation (1987), where he always seemed to be waiting in the transporter room whenever someone needed to beam somewhere. This suggested that he spent most of his days simply waiting alone in a small room.
This episode is a favorite of Armin Shimerman because it deals with a subject that is close to his heart: union problems. Shimerman sits on the Board of Directors of the Screen Actors Guild (SAG), and he is very passionate about labor related disputes.
The phrase spoken by Rom, "Workers of the world unite. You have nothing to lose but your chains", is a quote from the 1848 book 'The Communist Manifesto' by Karl Marx and Friedrich Engels.
Rom's reluctant confession of self-administering oo-mox is the first allusion to masturbation (in any species) in all of Star Trek.