The relationship between policyholders and an Islamic insurance (takaful) operator is in essence a principal-agent relationship. This paper analyzes the power of incentives offered to takaful operators in mitigating problems associated with such a relationship. These incentives include wakalah, an upfront agency fee as a percentage of premiums; mudarabah, a share in investment income from technical reserves; and surplus-sharing (a share in the insurance surplus). The paper concludes that all incentives offered to takaful operators must include surplus-sharing and that offering mudarabah in the presence of surplus-sharing is optimal only when the risk-adjusted return on investing technical reserves outweighs a similar return on effort exerted in underwriting risks. A wakalah hybrid is also recommended as it induces the operator to increase the size of the pool that, in turn, reduces average risk to the benefit of policyholders.