Social security tax overpayment

I worked two jobs during the year and each employer withheld social security taxes. I know I can get refund of overpayment  that was withheld from me on schedule 3. But half of the tax is paid by the employer. That half was also overpaid. What happens with that? Do I get the refund for the employer's half? Does IRS automatically send refund to an employer? Which one? I would like to understand what happens.