1) The Federal mandate only applies to large employers > 100, thus leaving out a significant portion of the population that either works for smaller employers, or isn't in the workforce at all. It would be much more effective if it applied to everyone and wasn't limited to a specific subset of the population. If it does get thrown out by the courts then it becomes a moot point.
2) The recent NYC mandate announced today would mirror the Federal mandate, but applies to all employers regardless of size. Still unclear how independent contractors and people working for themselves are covered, but again, it leaves out everyone who isn't in the labor force. Given that labor participation rates are in the low 60% range, that means that approx. 1/3 of people are exempted from these mandates.
3) The existing NYC mandates that require anyone participating in indoor dining, fitness, entertainment, & certain meeting spaces to be vaccinated would seemingly apply to a significant amount of the population that hasn't already been vaccinated.
So, what portion of the unvaccinated population will the new mandate by DeBlasio actually target ?
* People that are employed by private employers smaller than 100, who don't eat at restaurants, go to any indoor fitness activities, or watch any indoor entertainment. Perhaps that is a significant number of people, but I seriously doubt it.
Based on the above points, IMO, this new announcement is going to have a negligible effect on the vaccination rates.
The other question is how it will be enforced ? Is NYC planning on conducting raids of employers to make sure everyone is complying? I doubt it? How are they going to ensure that someone who is self employed painting houses, selling jewelry, repairing cars, doing plumbing/ electrical work, shoveling snow, or cutting grass is vaccinated under this law ?