Confidentiality in therapy is presented as near-absolute and is not. The exceptions are defined in advance, and the reason they are stated at the first session is that they cannot be agreed afterwards.
It is a professional duty, not a blanket privilege
The obligation arises from professional codes, employment terms and data protection law rather than from a single legal protection covering the whole relationship.
Legal privilege of the kind attaching to communications with a lawyer applies to therapy inconsistently, varying considerably between jurisdictions.
This means a court can, in some circumstances, require disclosure that the practitioner would otherwise refuse, and the practitioner has limited standing to resist.
Risk of serious harm is the main exception
Codes generally permit or require disclosure where there is risk of serious harm to the client or to another identifiable person.
The threshold is deliberately high and the judgement is difficult, which is why practitioners take such decisions to supervision wherever time allows.
Disclosure in these circumstances is normally limited to what is necessary and to the party who can act, rather than a general release of the record.
Reporting duties concerning children override consent
Where information suggests a child is at risk, most jurisdictions impose a reporting duty on professionals that operates regardless of client consent.
The duty is triggered by concern rather than by certainty, and it directs the professional to report to an agency that assesses rather than to investigate themselves.
Practitioners state this explicitly at the outset, because a client who discloses without knowing the rule has effectively been misled.
Records exist and can be requested
Notes are records, and in most systems clients have a right to request their own, while insurers and employers may receive summaries where they are funding the work.
Practitioners write with this in mind, which shapes note-taking toward factual, necessary content rather than speculation.
Where a service is funded by a third party, what that party receives should be specified before the work begins rather than discovered at the point of a request.
Why the limits are explained first
Consent to the arrangement is only meaningful if the client knows its boundaries before deciding what to say.
Explaining limits at the start also protects the working relationship, since the alternative is a client learning about them at the moment one is applied.
Practitioners who handle this well describe the exceptions plainly and briefly, and return to them if the work approaches territory where they might operate.