Cal. Rev. & Tax. Code § 19711

Any individual required to supply information to his or her employer under Section 13040, 13041, or 13042 of the Unemployment Insurance Code, who willfully supplies false or fraudulent information, or who willfully fails to supply information thereunder which would require an increase in the tax to be withheld under Section 13020 of the Unemployment Insurance Code, shall, in addition to any other penalty otherwise provided by law, upon conviction thereof, be fined not more than one thousand dollars ($1,000), or imprisoned not more than one year, or both.