On page 54,bottom left this image portrays a sign saying'' Workers needed''. Why is this sign posted? What does Vladek decide to do? Does he plan on working?

The sign is posted to recruit prisoners to fill positions at the front.... positions left vacant because of the deaths of German workers. Vladek plans to volunteer, as he refuses to stay in camp and wait his own death. The volunteers got a good night's rest, a good meal, and yes.... Vladek went to work as a laborer.