"informed of the reason" is correct and usable in written English.
Here is an example sentence: "I was informed of the reason for the delay in communication."
"Neither our colleague nor we have been informed of the reason for this action.
Negotiations began while the audience, informed of the reason for the delay, exploded in arguments that reflected the degenerated state of the Israeli-Palestinian relationship.
These rights, the report says, include the right to be informed of the reason for detention, the right to prompt and confidential access to counsel of one's choice and the presumption of innocence.
This morning Melinte was preparing to warm up for the hammer throw qualifying round when "she was informed of the reason why she could not compete," said Giorgio Reineri, a spokesman for track and field's world governing body, known as the I.A.A.F.
If a potential gun buyer is denied, the FFL is never informed of the reason.
His lawyer said Raymundo was not informed of the reason for the refusal.
After a 24-hour fast, Mikhail B. Khodorkovsky, the jailed former oil tycoon, called off a hunger strike on Wednesday, saying he was satisfied that President Dmitri A. Medvedev of Russia had been informed of the reasons for his protest.
In addition, these ongoing modifications to vaccine requirements, without parents being adequately informed of the reasons for such changes, have contributed to greater uncertainty among parents about the true importance of vaccines – a consequence that providers may not have fully appreciated for its negative impact on parents' vaccination attitudes.
*If a claim for benefits is denied, the patient must be informed of the "specific reasons" and must be told of any policies, guidelines or criteria used in making the decision.
Staff members who were not involved in day-to-day care of the residents (e.g. managers, domestic workers, therapists) were excluded from the study but were informed of the project and the reason for their exclusion.
Students were informed of the innovations in BIO 181, the reason for the changes, and the anticipated improved learning outcomes using the department's website.
