Line-By-Line Severance under the Canadian Access to Information Act 2026
Canadian ATIP exemption precedents and guidance: A comprehensive reference
The body of OIC decisions, Federal Court jurisprudence, and TBS policy guidance establishes strong, consistent principles constraining government institutions’ use of exemptions under the Access to Information Act. Across all six areas you’ve identified, the law repeatedly reinforces a central theme: exemptions must be applied narrowly, severance is mandatory, and blanket withholding is almost never justified. The Supreme Court’s landmark Merck Frosst (2012 SCC 3) formulation of the injury test and the mandatory duty to sever under s.25 form the backbone of virtually every challenge to overbroad exemption claims. Below is a structured compendium of the specific precedents, case citations, investigation numbers, and TBS guidance relevant to each issue.
Section 15(1): The injury test demands specificity, not speculation
Section 15(1) is a discretionary, injury-based exemption for international affairs and defence. Canada.ca +3 The institution bears the burden of proving a “reasonable expectation of probable harm” — the definitive standard set by the Supreme Court in Merck Frosst Canada Ltd v Canada (Health), 2012 SCC 3 at para 206:
“captures the need to demonstrate that disclosure will result in a risk of harm that is well beyond the merely possible or speculative, but also that it need not be proved on the balance of probabilities that disclosure will in fact result in such harm.” Canlii
This was confirmed to apply to all injury-based exemptions in Ontario (Community Safety and Correctional Services) v Ontario (Information and Privacy Commissioner), 2014 SCC 31 Ci-oic at para 53.
Key Federal Court decisions constraining s.15(1):
- Bronskill v Canada (Canadian Heritage), 2011 FC 983 (varied 2012 FCA 250; SCC leave refused): The Court found LAC failed the injury test for Tommy Douglas’s RCMP files. Justice Noël held there must be a “direct relationship between disclosure and an alleged injury” — no “umbrella rationale” is permitted. The Court identified passage of time, prior public disclosure, and historical significance as factors that weaken injury claims and must inform the discretionary exercise. Oic-ci
- Imai v Canada (Minister of Foreign Affairs), T-1170-19: The Court required a “clear and direct connection between the disclosure of specific information and the injury that is alleged” Canada.ca — a formulation directly relevant to internal emails containing personal views about public events.
- Do-Ky v Canada (Minister of Foreign Affairs and International Trade), [1997] 2 FC 907: The Federal Court of Appeal confirmed there is no “class exemption” for diplomatic notes. Even diplomatic correspondence requires evidence that disclosure of the specific notes could reasonably be expected to cause injury. Canada.ca
- Ruby v Canada (Solicitor General), [2000] 3 FC 589 (FCA): The Court held that the reviewing judge “should have scrutinized more closely whether the release of information, particularly information that is over 20 years old, could reasonably be expected to be injurious.” Oic-cioic-ci Age of records directly undermines injury claims. Oic-ci
- Air Atonabee v Canada (Minister of Transport), (1989) 27 FTR 194: Established that the burden of proof rests on the party resisting disclosure. Oic-ci
OIC decisions finding s.15(1) improperly applied:
| Decision | Institution | Key finding |
|---|---|---|
| 2022 OIC 06 (file 3214-00380) | Library & Archives Canada | 1979 RCMP brief on Soviet “Active Measures” — publicly available information “undermines claims that disclosure could reasonably be expected to result in harm.” LAC provided no representations on what harm could result. oic-ci |
| 2023 OIC 18 | Library & Archives Canada | Arctic submarine records — harm claim was “speculative”; NATO and GAC were proactively publishing related documents. Oic-ci |
| 2023 OIC 19 | Privy Council Office | Historical intelligence assessments — PCO “alluded to perceptions of possible harm, which fails to demonstrate that there is a reasonable expectation that the harm could occur.” Oic-ci |
| 2024 OIC 06 | National Defence | Intelligence Advisory Committee records — DND relied on an “umbrella rationale”; “injury resulting from disclosure is not apparent.” Oic-ci Cited Bronskill directly. Oic-ci |
| 2024 OIC 25 | Privy Council Office | 1981 IAC Minutes — no apparent harm from previous disclosures. Oic-ci |
On personal opinions in internal communications: While no single Federal Court decision squarely addresses s.15(1) applied to personal views of employees in internal emails, the cumulative jurisprudence makes the argument clear. The OIC Investigator’s Guide states: “Harm must be caused by disclosure not by a prior event or by prior publicity.” Oic-ci An employee’s personal commentary on media articles in internal emails would typically fail the injury test because (a) the underlying information is already public, (b) there is no direct connection between disclosing the views and injury to international affairs, and (c) section 21 (advice and recommendations), not s.15, is the proper exemption for internal deliberations — the OIC has noted institutions frequently misapply s.15 when s.21 would be the only arguable exemption. The 2009-2010 OIC Annual Report warned: “Institutions should not apply section 15 broadly as their default response to requests that touch on national security issues.” Oic-ci
Section 19(1): Government employees acting officially have limited privacy claims
Section 19(1) is a conditional mandatory exemption Oic-ci — institutions must refuse disclosure of “personal information” as defined in s.3 of the Privacy Act. oic-ci However, section 3(j) of the Privacy Act explicitly excludes from the definition of “personal information” any information about a government employee “that relates to the position or functions of the individual,” including:
- (j)(i) the fact that the individual is/was an employee
- (j)(ii) name, title, business address, telephone number
- (j)(iii) classification, salary range, and responsibilities
- (j)(iv) the name of the individual on a document prepared in the course of employment
- (j)(v) the personal opinions or views of the individual given in the course of employment oic-ciJustice Laws Website
This list is not exhaustive — the introductory wording of 3(j) is independently operative.
Supreme Court of Canada decisions:
- Dagg v Canada (Minister of Finance), [1997] 2 SCR 403: The leading case. Employee names on sign-in logs fell within the s.3(j) exception and were therefore not personal information for purposes of s.19. The SCC held Oic-ci the ATIA and Privacy Act form a “seamless code” with equal status. The government bears the burden under s.48 of proving information does not fall within the s.3(j)-(m) exceptions.
- Canada (Information Commissioner) v Canada (Commissioner of the RCMP), 2003 SCC 8: Historical postings, ranks, years of service, and anniversary dates of RCMP officers fell within s.3(j). The SCC drew the critical dividing line: “information relating to the position, function or responsibilities of an individual will consist of the kind of information disclosed in a job description” Oic-ci — this is not personal information. But “information relating to the competence and characteristics of the employee” remains protected.
Federal Court of Appeal decisions:
- Canada (Information Commissioner) v Canada (Transportation Accident Investigation and Safety Board), 2006 FCA 157 (“NAV CANADA”): Air traffic control communications were not personal information — they were “non-personal information transmitted by an individual in job-related circumstances.” The FCA articulated that privacy connotes “concepts of intimacy, identity, dignity and integrity of the individual”; routine job-related communications do not engage these interests. Office of the Privacy Commissioner of Canada Leave to SCC refused.
- Canada (Information Commissioner) v Canada (Solicitor General), [1988] 3 FC 551: Drew the line — general position/function information is releasable; qualitative evaluations of job performance are personal information. “There is no indication that qualitative evaluations of an employee’s performance were ever intended to be made public.”
- Husky Oil Operations Ltd v Canada-Newfoundland and Labrador Offshore Petroleum Board, 2018 FCA 10: Names and job titles of employees on administrative documents are releasable under s.19(2)(b) where publicly available. Canada.ca
OIC decision — Employment and Social Development Canada (Re), 2022 OIC 33: ESDC improperly applied s.19(1) to withhold CV information of a consultant/employee. Oic-ci The OIC found that “the consultant’s experience in jobs with the federal government fall under the exceptions” and ordered disclosure of all information relating to “the position, function and responsibilities of the successful consultant while as an employee or under contract.”
TBS Implementation Notice 2024-01 (November 13, 2024) — “Upholding privacy and safety of public servants” — provides the current authoritative guidance:
“The name of an individual on a document and the personal opinions or views given in the course of employment generally fall within the exceptions set out in subparagraphs 3(j)(iv) and (v) of the definition of ‘personal information.'”
“When the substance of the record is skewed more heavily toward the individual, rather than toward the general characteristics associated with their position or functions, it becomes more likely that the information is personal and not captured in the exception.” Canada.ca
The dividing line is clear: position/function information (including names, titles, and opinions expressed in official capacity) → not personal information → s.19 does not apply. Individual performance/personal characteristics → personal information → s.19(1) applies.
Section 21(1): Factual information must be severed from advice
Section 21(1) protects advice, recommendations, accounts of consultations/deliberations, and government plans. It is discretionary oic-ci and subject to a 20-year sunset under s.21(2). The critical principle: factual information mixed with advice must be severed and disclosed unless inextricably linked to the advice.
Key Federal Court decisions:
- Canadian Council of Christian Charities v Canada (Minister of Finance), 1999 CanLII 8293 (FC): The foundational case. Documents “containing information of a factual or statistical nature, or providing an explanation of the background to a current policy” do not fall within s.21(1)(a) or (b). oic-ci “Subsection 21(1) was not intended to exempt all communications between public servants despite the fact that many communications can be viewed as advice or recommendations.” Oic-ci
- 3430901 Canada Inc v Canada (Minister of Industry), 2001 FCA 254 (Telezone): The FCA defined “advice” as including “an expression of opinion on policy-related matters” but excluding “information of a largely factual nature,” even where the verb “advise” appears. oic-ci
- Canada (Office of the Information Commissioner) v Canada (Prime Minister), 2019 FCA 95: The FCA severed factual bullets from advisory bullets within the same memorandum: “The second bullet of the memo did not contain any hint of the writer’s opinion regarding what the Clerk should do.” oic-ci
- Canada (Information Commissioner) v Canada (Minister of Environment), 2006 FC 1235: The Court found s.21(1)(a) applied to the first 15 words of a sentence (opinion) but not the remaining 18 words (factual information). Oic-cioic-ci This level of granular line-by-line severance is what the Act requires.
- Canada (Information Commissioner) v Toronto Port Authority, 2016 FC 683: Executive committee minutes were not “automatically exempt in their entirety.” Factual statements — including that a committee member proposed changes to draft minutes — “did not reflect any discord, nor did it betray the content of consultations or deliberations.” Oic-ci
- Rubin v Canada Mortgage and Housing Corp, [1989] 1 FC 265 (FCA): Blanket exemption of board meeting minutes rejected. Many matters discussed “in no way constituted an account of consultations or deliberations.” oic-ci
OIC guidance on s.21 (updated September 19, 2025):
“The exemption does not extend to objective material or factual information on which the advice or recommendation is based.” oic-ci
“Institutions should disclose factual information, unless the facts are inextricably linked to the advice and recommendations, or would reveal them.” Oic-cioic-ci
OIC decision — Health Canada (Re), 2024 OIC 01: Ordered disclosure of pages withheld under s.21(1)(a) because one page contained “information that appears to consist of factual responses” with no representations explaining how they constituted advice, and another was “an email sent from a Health Canada employee, providing factual information.” Oic-ci
Section 25: The duty to sever is mandatory and paramount
Section 25 reads:
“Notwithstanding any other provision of this Part, where a request is made to a government institution for access to a record that the head of the institution is authorized to refuse to disclose under this Part by reason of information or other material contained in the record, the head of the institution shall disclose any part of the record that does not contain, and can reasonably be severed from any part that contains, any such information or material.” Oic-ci +2
Two words make s.25 decisive: “notwithstanding” (paramount over all other exemptions) and “shall” (mandatory, not discretionary).
The Merck Frosst severance test (2012 SCC 3, paras 229-238) requires a two-part analysis: (1) semantic analysis — does what remains after excision have meaning? and (2) cost-benefit analysis — is the effort of redaction justified by the benefits of disclosing the remainder? Ci-oic +2 The SCC confirmed that “applying s.25 is mandatory, not discretionary.” vLex Canada
Federal Court cases finding s.25 violations:
- Rubin v CMHC, [1989] 1 FC 265 (FCA): CMHC refused access one day after receiving a request for 13 lineal feet of documents, making a proper s.25 examination “physically impossible.” “Failure to perform the severance examination mandated by section 25 is an error in law which is fatal to the validity of the decision.” Oic-cioic-ci
- Blank v Canada (Minister of Justice), 2007 FCA 87: Confirmed s.25 “imposes a duty to sever portions of documents which do not contain the information for which an exemption is claimed.”
- Blank v Canada (Minister of Justice), 2005 FC 1551: “Information which can stand alone, without compromising privilege, such as facts upon which the advice is based, must be accessible.” Oic-cioic-ci Found inconsistent severance of subject lines across emails and ordered consistent disclosure. oic-ci
- Canada (Public Safety and Emergency Preparedness) v Canada (Information Commissioner), 2013 FCA 104: Solicitor-client privilege is not an “all-or-nothing” matter — s.25 severance applies even to privileged records.
- Ottawa Football Club v Canada (Minister of Fitness and Amateur Sports), [1989] 2 FC 480: If what remains is “meaningful without the deleted passages and does not distort the sense of the original,” severance is permitted. Fear of media speculation does not prevent severance. oic-ci
OIC decisions on s.25 violations:
- PSPC (Re), 2025 OIC 14: PSPC withheld the entirety of 96,781 pages under s.23 in a blanket manner without performing any severance exercise. The Commissioner found: “PSPC failed to adhere to section 25 when it fully withheld the entirety of the responsive records.” oic-ci At the time of response, PSPC had not even scanned the records into its system for processing.
- CSIS (Re), 2023 OIC 11 (file 5820-01454): CSIS used “negative (white) redactions” without specifying which portions were withheld under which exemption. Oic-ci The Commissioner found CSIS “failed to meet its obligations with respect to severance and duty to assist” and ordered CSIS to cease white redactions and cite specific exemptions on the records themselves. Oic-ci
- Department of Justice Canada (Re), 2020 OIC 5 (file 3215-00879): “Justice has not disclosed all the information it could have reasonably severed from the exempted information, as required by section 25.” Oic-ci
- Trans Mountain Corporation (Re), 2022 OIC 20: TMC argued severance wasn’t justified because “the information that is exempt from disclosure forms nearly all of the records.” The Commissioner rejected this blanket approach. Oic-ci
TBS guidance on severance (Archived Guidelines — Exemptions — General):
“A record containing information which may be exempt should not be exempted from access as a whole if exempt information can be severed from it and the rest of the record disclosed.” Canada.caCanada.ca
“Reasonable severability should be established by the intelligibility of the document or segment of the document remaining after the information for which an exemption is to be claimed has been removed. Although the original purpose of the document may be lost when the exempt information is removed, an exemption cannot be claimed for the entire record as long as there remains some information that is itself intelligible, comprehensible and relevant to the request.” Oic-ci +2
“Normally, the smallest unit remaining in a severed document should be a sentence.” Canada.ca
Limits on severance — courts have recognized severance is not reasonable where it would produce only “disconnected snippets” Oic-ci (Canada (IC) v Canada (Solicitor General), [1988] 3 FC 551) Oic-ci or “an entirely blacked-out document with, at most, two or three lines showing” Oic-ciCanada.ca (Montana Band of Indians v Canada, [1989] 1 FC 143). Canada.caOic-ci
Full-page withholding requires justification and document descriptions
Full-page withholding is permissible only where (a) the entire page genuinely contains nothing but exempt material, or (b) severance would produce only meaningless fragments. It is never appropriate as a default or blanket approach.
The Blank doctrine on minimum disclosure for withheld records:
Blank v Canada (Minister of Justice), 2004 FCA 287 established that even for fully withheld records, the requester is entitled to general identifying information:
“the description of the document (for example, the ‘memorandum’ heading and internal file identification), the name, title and address of the person to whom the communication was directed, the subject line, the generally innocuous opening words and closing words of the communication, and the signature block.” Oic-civLex Canada
This information enables the requester “to know that a communication occurred between certain persons at a certain time on a certain subject, but no more.”
TBS Directive on Access to Information Requests contains binding requirements:
- s.4.1.34: Institutions must cite “exemptions and exclusions invoked on records, provided under Part 1 of the Act, on each page, unless doing so would reveal the exempted information.”
- s.4.1.35: Institutions must ensure “clearly identifying the redacted material in a manner that is evident on the individual record.”
- s.4.1.36: “Lack of relevance is not a ground for exemption, Canada.ca ensuring that non-relevant information contained in a record is disclosed unless an exemption applies.” Canada.ca
OIC findings criticizing blanket withholding:
The CSIS (Re), 2023 OIC 11 decision is the landmark case on inadequate redaction practices. The Commissioner found that “caselaw under the Act recognizes that a requester must be given sufficient information to enable them to identify and challenge exemptions claimed” (citing Blank v Canada (Environment), 2007 FCA 289). Oic-ci CSIS was ordered to provide new responses citing specific provisions for each redacted portion, cease white redactions, and cease citing exemptions only in response letters. Oic-ci
The PSPC (Re), 2025 OIC 14 case — involving blanket withholding of 96,781 pages — demonstrates the OIC’s firm stance against full-document withholding without a genuine page-by-page severance exercise. The Commissioner explicitly cited the Merck Frosst two-part test and ordered PSPC to perform a proper severance exercise. oic-ci
The OIC’s 2010-2011 Annual Report stated: “Under section 25, institutions must disclose portions of exempted records that may be reasonably severed. Not doing so is contrary to the duty to assist. In this case, by erring on the side of caution and exempting the records in their entirety, Fisheries and Oceans Canada denied the requester information to which he was entitled.”
New institutions face documented compliance challenges
No standalone OIC guidance document titled “guidance for new institutions” exists, but the OIC has addressed this extensively through annual reports and systemic reviews.
The OIC’s 2009-2010 Annual Report, Chapter 3: “Taking Stock of Institutions New to the Access to Information Act” is the most directly relevant publication. It examined approximately 70 institutions that became subject to the Act in 2006-2007 under the Federal Accountability Act, including Crown corporations (CBC, Canada Post, Via Rail), foundations, and Officers of Parliament. Oic-cioic-ci Key finding: “The distinctive features of these organizations, as well as their newness, presented challenges as they developed access to information expertise and implemented significant administrative and cultural changes to achieve compliance.” Oic-ci
Documented compliance failures by new institutions:
- CBC (2007-2010): Overwhelmed by 547 requests in its first seven months (335 in the first month alone), CBC began to “automatically exempt all records containing certain internal accounting codes” under s.16(2). The OIC found this blanket approach unjustified — staff conceded disclosure wouldn’t actually facilitate an offence. The OIC also found “unjustifiably high” fees “due to mistakes made by inexperienced access staff.”
- Canada Post Corporation (2010-2011): Performance was “so far off the chart that we were unable to ascribe a rating” — a “Red Alert”. Average completion time: 190 days. Three out of four requests were delayed beyond statutory deadlines. Oic-cioic-ci
- The OIC itself (became subject to the Act on April 1, 2007): “As a new institution negotiating a new exemption without any jurisprudence to guide us, we experienced some challenges… Our initial efforts to address the complexity of these issues resulted in several complaints made against our office.” oic-ci
The 2010-2011 Annual Report assessed eight institutions newly subject to the Act and found that six demonstrated excellent results, but two had “some of the worst results in the 12 years that we have been doing report cards.” The Commissioner attributed success to leadership: “these institutions had the right attitude and approach towards transparency. Their leaders had made the necessary efforts to establish the right tools, allocate sufficient resources and implement sound approaches.” oic-ci
Current institutional compliance landscape: Commissioner Maynard has conducted six systemic investigations during her first term (2018-2025), including into IRCC, RCMP, National Defence, Library and Archives Canada, and the ArriveCAN matter. Oic-ci She has stated that “a culture of complacency has taken root in many institutions, with access requests being treated as nuisances” and emphasized that “access to information is also their job. It is a collective responsibility” — the ATIP unit is not solely responsible. Oic-ci
The TBS Access to Information Manual serves as the comprehensive reference for all institutions, including new ones, Canada.ca and training requirements under the TBS Directive on Access to Information Requests are mandatory: “All employees of Government institutions must receive training on their obligations under the Access to Information Act.” Canada.caCanada.ca New institutions can contact TBS at ippd-dpiprp@tbs-sct.gc.ca for interpretation guidance. Canada.caCanada.ca
Conclusion
Five principles emerge consistently across all six issue areas. First, every exemption requires a record-by-record, line-by-line analysis — blanket application of any exemption to categories of records is legally fatal (Rubin, Bronskill, PSPC 2025 OIC 14). Second, s.25 severance is mandatory and paramount, overriding every exemption including solicitor-client privilege. Third, injury-based exemptions like s.15(1) demand specific, evidenced harm Canada.ca — “perceptions of possible harm” and “umbrella rationales” consistently fail. Oic-ci Fourth, government employees’ professional information is presumptively public under s.3(j) of the Privacy Act, including their names, titles, and opinions expressed in official capacity. canada Fifth, institutions must provide sufficient identifying information about withheld records (document type, subject line, dates, names) to enable requesters to identify and challenge exemption claims. Oic-ci Taken together, these precedents provide a strong foundation for challenging overbroad exemption claims, particularly where an institution has applied s.15(1) to personal views in internal emails about public information, withheld entire pages under s.21(1) without severing factual content, or invoked s.19(1) to shield the professional activities of government employees.