In order to purchase life insurance on another person there must exist an insurable interest between you and the person you want to insure.
There does exist insurable interest between spouses because a person spouse may suffer financially upon the death of their spouse. And, a person may rely on a spouse for financial support.
In addition, your spouse may need to answer some health questions and may need to take a physical exam which is paid for by the insurance company.
If buying a No Exam life insurance policy, your spouse may need to do a phone interview to answer some health questions. If purchasing a medically underwritten life insurance policy, your spouse will need to do an exam in your home or other place of choice.
Learn more about buying life insurance for your spouse.