In the first scenario, a husband and wife both have similar earnings but the higher earning husband plans to delay receiving Social Security benefits until he is 70 (thus accruing credit that will boost his monthly income). The wife meanwhile will start taking her Social Security benefits at age 62 (thus receiving less than the full benefit that kicks in at age 66).
Most retirees likely assume the husband in this scenario is prudently delaying his retirement to maximize their retirement income without appreciating that the husband is entitled to claim spousal benefits while continuing to accrue deferral credits.
By filing a “restricted application,” the husband will receive 50% of his wife’s Social Security income for each month he delays claiming his own benefit (but only after his wife turns 66). In Horowitz’s illustration, such a filing entitles the husband to half his wife’s $1,750 a month–or $875 a month during the four years during which the wife is collecting benefits but the husband is not. (This illustration assumes husband and wife are both 66, so there are four years during which he can earn spousal benefits while earning earning deferral credits of his own).
As the car companies state, your mileage may vary.
Retiree's can supplement Social Security survivor benefits by purchasing additional life insurance.