6. The solution says...please clarify..
Expenses/Charges
a) Fixed charges might be more attractive to the market, but this would increase the risk to the insurance company therefore is likely also to increase the capital requirement.
If charges are reviewable, then even if actual expenses increase in the future, the insurer can just increase the charges and pass the increased expenses to the customer. However, if the charges are fixed, then the risk of increased expenses falls on the insurer. And so expense risk is higher and the capital requirement is increased.
b) For example, under version a it might prefer to offer fund based renewal commission but premium based commission under version b as this better matches the charging structure.
It's saying that the charging structure should be matched with the commission structure. So if charges are based on fund value and charged annually, so should commission. And if charges are based on premiums, then so should commission. Just imagine if it was the other way round. Say the insurer goes with (a) but offers a premium based commission. Now imagine the employer pays monthly premiums. Then the insurer will receive charges (income) only once a year but have to pay commissions (outgo) every month!
Sensitivity
a) The company should test the sensitivity of profit to variations in future experience. For example, version a will be more sensitive to future investment returns and if x<y then version a will also be more sensitive to early withdrawal experience.
Version (a) is more sensitive to future investment returns because it is based on a % of the fund value. If the investment returns are poor, then fund value is lower and so the charges received are lower.
If x < y, version (a) is more sensitive to early withdrawals. There are initial expenses to setting up the policy. Version (b) is going to recoup those initial expenses immediately because otherwise it is not a profitable policy since the insurer cannot make any further charges. Therefore, it is not as sensitive to early withdrawals as it has already recouped the initial expenses. For version (a), the initial charges probably won't cover the initial expenses, so it relies on further charges to cover the initial expenses. If the policy lapses, then it won't receive anymore charges and won't be able to recoup initial expenses.
b) Since both options will result in a cross subsidy from large to small policies the company should consider whether to impose a minimum case size.
As both options involves charges that are based on the SIZE of the contract (either fund value or premium), there will be cross subsidy as larger contracts will be paying more charges (and hence contributing more to expenses). If the insurer does not impose a minimum case size (i.e. contract size), it runs the risk of having small contracts which can't even cover overheads.