Cal. Unemployment Insurance Code § 1177.5

(a) If the director determines that an overpayment has been made to the department by an employing unit or the School Employees Fund because of a reason specified in this subdivision, and the amount of the overpayment has been reimbursed to the state by the federal government pursuant to the federal Workforce Investment Act of 1998, then the director shall credit the employing unit or the School Employees Fund with the amount of that overpayment, provided that the director determines that the overpayment was made because of one of the following: (1) An employing unit paid unemployment insurance contributions after December 31, 1974, based on wages paid to individuals participating in a public service employment program under the federal Workforce Investment Act of 1998. (2) An employing unit paid amounts after December 31, 1975, pursuant to Section 803 of this part, for benefits awarded based on wages paid to individuals participating in a public service employment program under the federal Workforce Investment Act of 1998. (3) Payments were made by the School Employees Fund after December 31, 1975, to the Unemployment Fund pursuant to Section 821 of this part for benefits awarded based on wages paid to individuals participating in a public service employment program under the federal Workforce Investment Act of 1998. (b) No overpayment described in subdivision (a) shall be refunded to an employing unit or to the School Employees Fund.