At the time of buy long-term policy at retirement time the premium would be higher so it is very much important that your selection of the company are most important. The company must be financially sound and bigger. Choosing the small company with poor rating is going to be vulnerable for the longer-term period. It is better to select better insurance company with higher rating.
In USA there are various rating agencies are operating to give rating services to various industries like banking, financial, and insurance services. The major rating agencies are A.M. Best, D & B, Moody, Duff & Phelps, Fitch, Weiss, and Standard & Poor´s etc. The rating insurance company criteria are different because all ratings agencies have predefined criteria and normally focusing on financial results of the company.