CNNMoney reports the nation's largest retailer said domestic partners of its U.S. employees will be eligible starting Jan. 1 in a postcard mailed to workers this week.
The change will cover same-sex couples, as well as domestic partners of opposite genders who have been living together and in a committed relationship for at least a year.
The move comes just months after the Supreme Court overturned the Defense of Marriage Act, which previously defined marriage as between a man and a woman. The ruling meant that married same-sex couples in a dozen states and the District of Columbia are now eligible for more than 1,000 spousal benefits previously off limits under DOMA.
Workers will be able to enroll from Oct. 12 through Nov. 1.