(From CPA website): "In consulting a practitioner about personal psychological problems, people are often concerned about confidentiality. Early on when seeing a client, the psychologist should review the limits of confidentiality. Information disclosed to a psychologist is confidential and cannot be disclosed without the client's consent except under certain specific conditions. These conditions are referred to as the "limits of confidentiality".
These limits typically involve situations where the client gives the psychologist information that leads him or her to suspect that harm might come to someone. If a psychologist suspects that a client is going to harm himself or someone else, that a child is being abused or neglected, or that another health care practitioner has sexually abused a patient in some way, then he or she has an obligation to report this information to the appropriate authority (the police or children's aid society for examples).
The courts also have the power to subpoena a psychologist's files. Psychologists must retain records of their contacts with clients and these records typically include details about the clients presenting problem and history, psychological test data, and any diagnoses made, as well as details about sessions attended. These records must be kept and stored securely for periods of time defined by provincial regulation.
Typically, records are kept for 10 years after the last client contact and for at least 10 years after a minor client reaches the age of majority. After the 10 years are up, files are securely discarded by being shredded."