What are the standards for same-sex domestic partners to be eligible for benefits?
Policy defines “domestic partnership” as a committed relationship between two adults, of the same sex, in which the partners:

(1) are each other’s sole domestic partner and intend to remain so indefinitely;
(2) maintain a common residence, and intend to continue to do so (or would maintain a common residence but for an assignment abroad or other employment-related, financial, or similar obstacle);
(3) are at least 18 years of age and mentally competent to consent to contract;
(4) share responsibility for a significant measure of each other’s financial obligations (including partnerships in which only one partner earns income);
(5) are not married or joined in a civil union to anyone else;
(6) are not the domestic partner of anyone else;
(7) are not related in a way that, if they were of opposite sex, would prohibit legal marriage in the U.S. jurisdiction in which they reside at the time the partnership was formed;
(8) are willing to certify, if required by the agency, that they understand that willful falsification of any documentation required to establish that an individual is in a domestic partnership may lead to disciplinary action and the recovery of the cost of benefits received related to such falsification, as well as constitute a criminal violation; and
(9) are willing promptly to disclose, if required by the agency, any dissolution or material change in the status of the domestic partnership.