The Mayo Clinic has adopted a policy requiring gay employees to get married to stay eligible for health insurance. The Clinic has offered same sex benefits for years, and when gay marriage was not legal, it stood to reason that the employee would not have to be married. Now, with gay marriage legal, the requirement places gay employees on par with other employees who must be married to qualify for such benefits. It provides a different twist to the idea of marriage equality, which usually pertains to rights, rather than obligations.
Since there remain states which do not recognize gay marriage, including two states (Florida and Arizona) where Mayo has employees, there may be an impetus for some gay employees to relocate to a non-marriage-equality state to avoid the marriage requirement.
It is expected that other large companies will follow suit and establish similar policies.