Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Why do only motor insurers employ “No Claims Discounts”?
Discounting premiums based on some past history is not unique to auto policies.  Other insurers will discount premiums based on past claims history they just don't shout about it as a marketing means to attract customers.  Life insurance is underwritten based on your health history; if you want to consider your "preferred" underwriting status based on your clear health history a "discount based on your healthy habits" you're free to do so.  All sorts of lines of insurance use all sorts of things to determine an underwriting classes.  The fact that auto insurers trumpet specific discounts does not mean the same net effect is not available on other lines of coverage. Most states require auto rates and discounts to be filed and approved with some state regulator, some regulatory bodies even require that certain discounts exist.  You could likely negotiate with your business insurance underwriters about a better rate and if the underwriters saw fit they could give you a discount.  Auto insurers can offer discounts but are generally beholden to whatever rate sheet is on file with the applicable regulatory body. For the person who downvoted, here's a link to a spreadsheet outlining one of the CA department of insurance allowable rating factor sheets related to auto insurance.