The phrase "are not voluntarily" is correct and usable in written English.
It can be used to describe actions or situations that are not done by choice or free will.
Example: "The participants in the study are not voluntarily providing their personal information."
Alternatives: "are not willingly" or "are not by choice".
What we have seen thus far is that the "millionaires and billionaires" are not voluntarily disclosing their offshore accounts.
If enterprises suspend production due to state intervention, enterprises are reluctant to pay their employees' social insurance premiums because enterprises are not voluntarily suspending production.
This hack could be by Warner as strong evidence that social media companies like Facebook are not voluntarily doing enough to protect uses' security and privacy.
In 2011, to understand why families are not voluntarily immunizing their children against mumps, we surveyed mothers who were university graduates to examine the factors and barriers influencing mumps vaccination in Japan.
Granted, it is bad luck for me if I am born uncharming and lacking in good lucks and others are not voluntarily willing to enter into romance or friendship with me, but my distressed condition does not tend to show that my rights have been violated.
The alien hand syndrome is a striking phenomenon characterized by purposeful and autonomous movements that are not voluntarily initiated.
They aren't voluntarily going to cooperate with the inquiry, just as they didn't voluntarily disclose the abuse to the authorities at the time.
If you aren't careful, you could find yourself adopting much of the offender's own behavior, even if you aren't voluntarily trying.
"She's not voluntarily leaving the apartment," Ms. Shollenberger said.
"He was not voluntarily let into the school at all," Lieutenant Vance said.
Vance says "[the gunman] was not voluntarily let into the school at all.
