Not a Jewish holiday. Rather, we have
Purim, a minor (i.e., not Torah) holiday.
See also:
Judaism 101: Purim What Is Purim? - Purim
Next holiday will actually be Chanukah, which this year is the evening of December 12 through the evening of December 20. It is not, however, a major holiday (it is not a Torah holiday), and so we do not take off work as a general rule. (We can, but are not required to.)
Purim commemorates the survival of the Jewish people against a physical thread, just as Chanukah commemorates our survival against a spiritual threat.