This is OSHA telling people that they may have received a placebo instead of a vaccine during a pandemic.

Why would people receive a placebo during a pandemic?

"Administered as part of a clinical trial"

Here's some of the body of the MANDATE(not law, because it wouldn't pass constitutionality). However, I am going to abuse the shit out of it in ways that are going to hurt businesses that virtue signal their participation.

Administered as part of a clinical trial at a U.S. site, if the recipient is documented to have primary vaccination with the active (not placebo) COVID-19 vaccine candidate, for which vaccine efficacy has been independently confirmed (e.g., by a data and safety monitoring board) **or if the clinical trial participant at U.S. sites had received a COVID-19 vaccine that is neither approved nor authorized for use by FDA but is listed for emergency use by WHO; or

(ii) A person’s status 2 weeks after receiving the second dose of any combination of two doses of a COVID-19 vaccine that is approved or authorized by the FDA, or listed as a two-dose series by the WHO (i.e., a heterologous primary series of such vaccines, receiving doses of different COVID-19 vaccines as part of one primary series). The second dose of the series must not be received earlier than 17 days (21 days with a 4-day grace period) after the first dose.

The whole thing...

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwjDqta23J71AhXNXc0KHYbFAf0QFnoECAsQAQ&url=https%3A%2F%2Fwww.osha.gov%2Fsites%2Fdefault%2Ffiles%2Fcovid-19-ets2-sample-mandatory-vaccination-policy.docx&usg=AOvVaw1xdhf4Le2dIgB8xBuZ8nHE