Who Can I Cover? Your eligible dependents are: Your legally married spouse or domestic partner.* However, if your spouse/domestic partner has coverage through another employer, he or she is not eligible to be part of the Steelcase medical and dental plans—not even for secondary coverage. Your dependent children through the end of the month that they turn 26. Reminder: Benefits provided to domestic partners are taxable unless the domestic partner qualifies under IRS tax rules as a tax dependent. To change tax status of your domestic partner and/or their children, contact the Steelcase Benefits Center. *Domestic partners of the same or opposite sex are defined as those who can demonstrate common residence for at least six months and financial interdependence, or who meet the criteria established by those states that formally recognize these relationships. Tax treatment may differ, and the medical expenses of a domestic partner cannot be reimbursed from a flexible spending account.