(6) Employees taken into account. For purposes of this paragraph (g), an employee is taken into account if the employee is taken into account for purposes of applying
section 410(b) with respect to any testing day for the testing year. For this purpose, employees described in
section 410 (b)(3) and (b)(4) are excluded. However,
section 410(b)(4) is applied with reference to the lowest minimum age requirement applicable, and with reference to the lowest service requirement applicable under any plan of the employer that benefits employees of the separate line of business, as if all the plans were a single plan under
§ 1.410(b)-6(b)(2). For purposes of the minimum benefit requirement of
paragraph (g)(2) of this section,
section 410(b)(4) may be applied with reference to the lowest minimum age requirement, and with reference to the lowest minimum service requirement, applicable under any plan of the employer that benefits highly compensated employees of the separate line of business, as if all the plans were a single plan under
§ 1.410(b)-6(b)(2), or, if no plan of the employer benefits highly compensated employees of the separate line of business, with reference to the greatest age and service requirements permitted under
section 410(a)(1)(A). The employees of the separate line of business are determined by applying
§ 1.414(r)-7 to the employees taken into account under this paragraph (g)(6). An employee is treated as a highly compensated employee for purposes of this paragraph (g) if the employee is treated as a highly compensated employee for purposes of applying
section 410(b) on any testing day for the testing year. For the definition of “testing day,” see
§ 1.414(r)-11(b)(6).