The best thing to do is stay home. Shingles is contagious, but only to children or adults who have not had chickenpox. However, the people who get infected by someone with shingles get chickenpox, not shingles. People who get chickenpox may or may not sometime later in life develop shingles. So the question to work or not depends on if the people you work with have had chicken pox or not. If you can, take the day off for sure. If you do not work around people who are not immune, there is no danger. Keep in mind co workers can also bring it home, so find out about if their families or people they live with are immured..