2. Walpurgis Night and Beltane: In this scenario, you claim that your religion observes a May 1 holiday. If asked what the religion is (which would probably be illegal anyway), reply, “Neo-pagan. I’m Celtic on my mother’s side and German on my father’s. It’s a religious observance.” Since there’s freedom of religion, no one can fire you without violating your First Amendment rights.

2. Walpurgis Night and Beltane: In this scenario, you claim that your religion observes a May 1 holiday. If asked what the religion is (which would probably be illegal anyway), reply, “Neo-pagan. I’m Celtic on my mother’s side and German on my father’s. It’s a religious observance.” Since there’s freedom of religion, no one can fire you without violating your First Amendment rights.
http://www.deathandtaxesmag.com/182013/striking-for-dummies-how-to-skip-work-to-join-occupy-wall-streets-may-1-general-strike/