smiley – this was discussed in the past as well… (also past threads on the forum).
1) low volatility human capital (consistent cash flow): Bob works for the state as a garbage man and his salary is inflation adjusted and equal to $36,000 a year in today’s money.
2) high volatility human capital (less consistent cash flow): Joe is a plumber and works as an independent contractor and his income depends on how much business he gets. On average he can still make $36,000 but one year he makes $50,000 and another year $22,000.
Bob’s family highly relies on his steady income. His wife consistently spends $200 a month at local Starbucks and his kids play soccer and baseball in park district leagues. Bob has all expenses calculated for the next 50 years. He knows when he will pay off his $200,000 house and how much money he will have to save for retirement. Since all the calculations are based on his steady income, he desparately needs life insurance.
Joe, on the other hand, can not rely on his income as much. His wife hopes that they will go on vacation and buy a new couch if Joe has a good year but she knows that she can’t go out to Starbucks all the time because his income isn’t steady. They are not sure about enrolling their kids in a local soccer league because they might not have money to pay fees. They know they can only buy a $150,000 house and still consistently make mortgage payments. Since their expense calculations are not based on a steady income, need for life insurance is not as high as it is for Bob.
— Part 2 — -
Life insurance (as defined in this reading) is a subsitute for human capital. It serves to replace prematurely lost human capital. Since it pays out on death, it only has utility if there is a desire to leave a bequest (estate) to an heir. This bequest will be made up of two parts - Financial capital and face amount of the life insurance at the date of death.
So if human captail is volatile, portfolio theory demands that financial capital be invested using low volatility securities to get an optimal portfolio. Because human capital is more volatile we use a higher discount rate when calculating its present value (relative to financial capital).
Since life insurance is a subsitute for human capital we use the same discount rate in figuring out the optimal amount. This higher discount rate leads to a lower need for life insurance.