Lots of meme answers here but the real one is the WARN act requires employers with more than 100 employees to provide them at least sixty days notice in the event of mass layoffs... plant closure... contact cancelation etc... based off a percentage of employees and the type of lost work it is. In theory notifications are to prevent a sudden fallout in a local econemy where overnight a sizeable population in an area is without work and no plan leasing to second and third order effects where other businesses are then hurt by the lack of cash flow. In theory employers with less than 100 emplyees are exempt from that because the loss of one small contract could suddenly teach that pretense threshold and wipe the business out entirely if they had to keep paying workers they have no work for. In theory a vax mandate is the and as "you're out of a job" statement for those not vaxxed.