[almostarockstar]

Relevant story based on your example:

During the early days of the covid lockdowns, before nursing home staff or residents were vaccinated, many staff quit en masse to work as covid test center staff. The hours were better. The job was less complex and less demanding. The pay was comparable.

Then when the remaining staff began to contract covid, they were down to a few core people working continuously to provide care. Many recently (and not so recently) retired nurses returned to work until they could figure things out.

There isn't much to learn about enterprise staffing here except that when the chips are down, people who are truly devoted to their jobs will go to extraordinary lengths to make sure it gets done.

I feel it's a pity these people are often (in my country) poorly compensated for the incredible effort they make.