The two "eighth floor" construction workers are named Craig Gerard and Matt Zinman. In reality, Craig Gerard is the name of the script coordinator and Matthew Zinman is the name of one of the assistants to the producers for the show.
When Lily corrects Robin on the spelling of the word 'weird' , Robin tells her no one likes a "Ted" which they mention in the "Spoiler Alert" episode which means he is a corrector.