Sometimes, they will share their lunch with him. Sometimes, it's roast beef. Another time, a worker hauled some bricks and tarp over the pen to make the dog a crude shelter. They laid down some cedar shavings to give him a slender stretch of dry footing.
Since they started working in the neighborhood, this dog has been breaking their hearts.
"He's as sweet as he can be," one of the workers, who didn't want to be identified, tells The Dodo. "He's so friendly. He'll let you pet him."
Maybe that's because the construction workers seem to be all this dog has - his owners, they say, are rarely seen.
They come around every now and then and throw dry dog food over the pen, where it scatters in the mud.
"The people, I don't think, are really living here," the worker says. "But they left the dog here. They come in once a day, throw some boxes in a car and take it away somewhere. They don't pet the dog."