The cost of extending benefits to domestic partners is low for employers, and would not compromise the financial bottom line in our state.  The administrative costs of implementing domestic partner benefits are comparable to the costs of adding spouses when employees marry.  Some companies worried that health benefits for domestic partners would expose them to unusual health costs because HIV-related claims that would increase premiums. Time has shown that this is not the case. Insurers are not raising premiums for companies that offer domestic partner benefits because costs have been negligible.