https://www.nytimes.com/2008/02/05/health/05iht-obese.1.9748...
This study only included healthcare costs, and so the savings would thus be even greater when considering pensions.
"On average, healthy people lived 84 years. Smokers lived 77 years and obese people 80 years.
The healthy group cost $417,000, the obese $371,000, and smokers $326,000."
https://qcovid.org/Calculation
An average healthy White British male of 66 years (retirement age) has a hospitalisation risk of 1 in 831; death risk of 1 in 2786.
By contrast the yearly risk of death in that age bracket generally, from any cause, is 1 in 42:
http://www.bandolier.org.uk/booth/Risk/dyingage.html
COVID is accelerating deaths from existing comorbidities or very old age; based on this data it is not felling healthy workers.
When your diabetes leads to kidney problems and stroke, your last 5 years of life likely cost more than the rest combined.