An insurance rider is an optional add-on that modifies the coverage, terms, or benefits of a base policy — either expanding protection (e.g., critical illness benefit) or limiting it (e.g., an exclusion rider). Riders are typically priced separately and attached at issue or renewal.
Insurance products are structured with a base policy providing standard coverage and optional riders that let policyholders customize the contract. The terms 'rider' and '[[endorsement]]' are often used interchangeably — technically, riders are more common in life/health insurance and endorsements in property/casualty, but many insurers use both words for any mid-contract modification. Common life insurance riders include: waiver-of-premium (keeps the policy in force if you become disabled and can't pay the [[insurance-premium]]), accelerated death benefit (allows early access to a portion of the face amount upon terminal illness diagnosis), and child term rider (extends coverage to dependent children at low cost). Health insurance riders can add vision, dental, or critical illness benefits to a base medical policy. The NAIC notes that riders must be approved by state insurance commissioners alongside the base policy form, which provides a layer of consumer protection on pricing and terms.
It depends on your specific risk exposure. A waiver-of-premium rider has high value for someone without long-term disability income insurance. An inflation-protection rider on a long-term care policy is nearly essential given multi-decade cost growth in care.
Some riders can be added at renewal or within a specified enrollment window. Others — especially those based on your health — must be added at original issue before any underwriting concerns arise.