It depends on the payment terms:
However, these additional wages are not subject to Social Security, or Medicare (FICA), or Unemployment (FUTA) taxes if the payments of premiums are made to or on behalf of an employee under a plan or system that makes provision for all or a class of employees (or employees and their dependents). Therefore, the additional compensation is included in the shareholder-employee’s Box 1 (Wages) of Form W-2, Wage and Tax Statement, but is not included in Boxes 3 and 5 of Form W-2.
