Worst-case actuarial calculations consistent with single- and multiple-decrement life tables

► The present work complements the recent paper by Barz and Müller (2012). ► We study not only two-state models but also multi-decrement models. ► We allow for any combination of sojourn and transition benefits. ► We study increasing, decreasing, convex, and concave rates. ► We derive upper and lower bounds for the prospective reserves.