Cancer and Critical Illness Closed Block Segment Group and Individual Long-term Care Individual Disability Other Other insurance products not actively marketed include group pension, individual life and corporate-owned life insurance, reinsurance pools and management operations, and other miscellaneous product lines. The majority of these products have been reinsured, with approximately 80 percent of reserves at December 31, 2020 ceded to other insurance companies. We began limiting sales of the types of individual disability policies reported in our Closed Block segment subsequent to the mid-1990s after substantial changes in product design were implemented to improve the overall risk profile of our offerings of individual disability products. We entirely discontinued issuing new policies in this closed block of business in 2004. The majority of the policies were written on a noncancelable basis and were marketed on a single-life customer basis. Profitability is affected by persistency, investment returns, claims experience, and the level of administrative expenses. In December 2020, we entered into a reinsurance agreement to reinsure the majority of our Closed Block individual disability products to a third party. For further discussion on this reinsurance agreement, refer to "Reinsurance" herein this Item 1, "Executive Summary" and "Segment Results" contained herein in Item 7, and Note 12 of the "Notes to Consolidated Financial Statements" contained herein in Item 8. Profitability is affected by premium rate increases, persistency, investment returns, mortality and other claims experience, and the level of administrative expenses. Our long-term care insurance was sold on a guaranteed renewable basis which allows us to re-price in-force policies, subject to regulatory approval. Premium rates for long-term care vary by age and are based on assumptions concerning morbidity, mortality, persistency, administrative expenses, investment income, and profit. Premium rate increases continue to be implemented where needed and where approved by state regulators. We develop our assumptions based on our own claims and persistency experience and published industry tables. Long-term care insurance pays a benefit upon the loss of two or more activities of daily living and the insured's requirement of standby assistance or cognitive impairment. Payment is generally made on an indemnity basis, regardless of expenses incurred, up to a lifetime maximum. Benefits begin after a waiting period, usually 90 days or less, and are generally paid for a period of three years, six years, or lifetime. We discontinued offering individual long-term care in 2009 and group long-term care in 2012. Group long-term care was previously offered to employers for the benefit of employees. Individual long-term care was previously marketed on a single-life customer basis. Our Closed Block segment consists of group and individual long-term care, individual disability, and other insurance products no longer actively marketed. Closed Block segment premium income for 2020 was comprised of approximately 68 percent group and individual long-term care and 32 percent individual disability. Profitability of these products is affected by the level of employee participation, persistency, investment returns, claims experience, and the level of administrative expenses. Premiums are generally based on assumptions for morbidity, mortality, persistency, administrative expenses, investment income, and profit. We develop our assumptions based on our own experience and published industry tables. Premiums are primarily individual guaranteed renewable wherein we have the ability to change premiums on a state by state basis. Cancer policies provide various benefits for the treatment of cancer including hospitalization, surgery, radiation, and chemotherapy. Critical illness policies provide a lump-sum benefit and/or fixed payments on the occurrence of a covered critical illness event. 8