Case Details
- Citation: [2022] SGHC 141
- Title: Han Hui Hui and others v Attorney-General
- Court: High Court of the Republic of Singapore (General Division)
- Originating Summons: Originating Summons No 1313 of 2021
- Date of Judgment: 16 June 2022
- Date Judgment Reserved: 18 April 2022
- Judge: Dedar Singh Gill J
- Applicants: Han Hui Hui and others
- Respondent: Attorney-General’s Chambers
- Legal Area: Administrative Law – Judicial review
- Procedural Posture: Application for leave to commence judicial review proceedings and for declaratory relief
- Core Challenged Instruments: (1) Unvaccinated Medical Bills Policy (announced 8 November 2021; implemented from 8 December 2021) and (2) Paragraph 7(c) of the “Updated Advisory on COVID-19 Vaccination at the Workplace” dated 23 October 2021 (the “October Advisory”)
- Key Policy Context: Workforce Vaccination Measures (“WVMs”) effective 1 January 2022; vaccination remains voluntary; unvaccinated employees by choice face workplace restrictions and related employment consequences
- Statutes Referenced (as per metadata): Executive in exercising its discretion under an Act, Penal Code
- Length of Judgment: 82 pages; 21,141 words
- Cases Cited (as per metadata): [2022] SGCA 16; [2022] SGCA 46; [2022] SGHC 141
Summary
Han Hui Hui and others v Attorney-General [2022] SGHC 141 concerned a judicial review challenge to two connected COVID-19 policy measures adopted by the Singapore Government. The applicants sought leave to challenge (i) the “Unvaccinated Medical Bills Policy”, under which COVID-19 patients who were “unvaccinated by choice” would no longer receive full coverage of COVID-19 medical bills in public hospitals, and (ii) paragraph 7(c) of the October Advisory, which provided guidance to employers on what work arrangements could be made for unvaccinated employees who were unable to be physically present at the workplace under the Workforce Vaccination Measures (“WVMs”).
The High Court (Dedar Singh Gill J) rejected the applicants’ bid for leave to commence judicial review proceedings and declined to grant the declaratory relief sought. The court applied established administrative law principles governing leave for judicial review, including the “susceptibility” and “sufficient interest” requirements, and assessed whether the applicants had a reasonable suspicion that the impugned policies were unlawful or irrational. The court concluded that the applicants’ grounds did not clear the threshold for judicial review, and that the challenged measures were neither illegal nor irrational in the relevant sense.
What Were the Facts of This Case?
The COVID-19 pandemic reached Singapore in 2020, prompting the Government to implement a range of public health measures. A key institutional feature of the Government’s response was the Multi-Ministry Taskforce (“MTF”), established on 22 January 2020 to coordinate the whole-of-Government response, protect Singaporeans, and work with international partners. As the pandemic evolved, so did the Government’s policies, including measures relating to vaccination, workplace safety, and healthcare financing for COVID-19 treatment.
Two policy developments were central to the applicants’ challenge. First, on 8 November 2021, the Government announced that COVID-19 patients who were unvaccinated by choice would be charged for their COVID-19 medical bills from 8 December 2021. The policy was framed as a departure from an earlier decision to fully cover COVID-19 medical bills for all COVID-19 patients in public hospitals. The Government’s explanation, as reflected in the evidence before the court, was that full coverage had been a temporary response to the emergence of COVID-19 as an unfamiliar disease, whereas the Unvaccinated Medical Bills Policy represented a return to the “norm” of regular healthcare financing for those who were eligible for vaccination but declined it.
Second, the applicants challenged paragraph 7(c) of the October Advisory, issued on 23 October 2021 by the Tripartite Partners (the Ministry of Manpower (“MOM”), the Singapore National Employers Federation (“SNEF”), and the National Trade Unions Congress (“NTUC”)). The October Advisory was issued to guide employers and employees on work arrangements for unvaccinated employees in light of the WVMs, which took effect on 1 January 2022. Under the WVMs, only employees who were fully vaccinated, or had recovered from COVID-19 within a specified period, could return to the workplace. Unvaccinated employees could not return unless they met testing requirements, and employees medically ineligible for vaccination could be exempted if they needed to work on-site.
Paragraph 7 of the October Advisory provided guidance for unvaccinated employees whose work could not be performed from home. It set out options available to employers, including allowing continued work with pre-event testing at the employee’s own expense and time, redeploying employees to suitable roles that could be performed from home, and—critically for the applicants—placing such employees on no-pay leave or, as a last resort, terminating their employment with notice. The applicants’ challenge focused on the legality and rationality of this guidance, particularly insofar as it supported employment consequences for unvaccinated employees who could not comply with workplace attendance requirements.
What Were the Key Legal Issues?
The court’s first task was procedural: whether leave should be granted to commence judicial review proceedings to quash the Unvaccinated Medical Bills Policy and the October Advisory (specifically paragraph 7(c)). This required the applicants to satisfy threshold requirements, including that the challenged decisions or instruments were “susceptible” to judicial review and that the applicants had a “sufficient interest” in the matter. The court also considered whether the applicants had a “reasonable suspicion” that the impugned measures were unlawful or irrational.
Substantively, the applicants advanced grounds that the policies were unlawful and/or irrational. A major strand of the case concerned “substantive legitimate expectations” and the constitutional dimension—particularly Article 12(1) of the Constitution (equal protection). The applicants argued, in essence, that unvaccinated persons faced differential treatment and that the Government’s factual and policy rationales did not justify the differential outcomes. They also sought declaratory relief that the October Advisory and the Unvaccinated Medical Bills Policy were unlawful and/or irrational.
How Did the Court Analyse the Issues?
The court began by addressing whether leave should be granted. In Singapore’s judicial review framework, leave is not automatic; it functions as a filter to prevent unmeritorious challenges from proceeding. The court examined the “susceptibility” requirement, which concerns whether the impugned act or instrument is of a type that can be reviewed by the court. Policies and advisories issued in the context of executive action can, depending on their nature and effect, be susceptible to review. The court’s analysis focused on whether the applicants’ targets—namely a policy decision on medical bill coverage and an advisory on workplace arrangements—were properly justiciable in the judicial review context.
Next, the court considered the “sufficient interest” requirement. This requirement ensures that the applicant has a real and direct stake in the matter, rather than a purely abstract or public-spirited concern. The court assessed whether the applicants were sufficiently affected by the challenged measures to qualify for leave. The analysis also intersected with the practical consequences of the policies: the Unvaccinated Medical Bills Policy affected the financial exposure of COVID-19 patients who were unvaccinated by choice, while paragraph 7(c) of the October Advisory related to employment outcomes for unvaccinated employees who could not attend the workplace under the WVMs.
On the “reasonable suspicion” requirement, the court evaluated whether the applicants had raised arguable grounds that the policies were illegal or irrational. The court’s reasoning reflects a careful approach to the evidential and analytical basis of the applicants’ claims. The applicants challenged the factual bases for the Unvaccinated Medical Bills Policy, including the Government’s “efficacy rationale” (that vaccination reduces serious illness and death), and the “resource rationale” (that unvaccinated persons impose greater strain on healthcare resources). The court addressed whether the applicants’ criticisms undermined these rationales to a degree sufficient to establish a reasonable suspicion of illegality or irrationality.
In particular, the court scrutinised the applicants’ reliance on death and critical illness (“CI”) statistics. The judgment addressed, among other matters, whether the applicants’ assumptions about population equivalence were valid, whether the statistics were correctly calculated, and whether the statistics actually rebutted the Government’s rationales. The court also considered whether later statistics (including those referenced in the judgment as 10 April 2022 statistics) subverted the efficacy and resource rationales. The court concluded that the applicants had not demonstrated that the factual bases were incorrect in a way that would render the policy irrational or unlawful. The court also considered whether foreign cases were consistent with the approach taken by the Government, indicating that comparative jurisprudence did not support the applicants’ position that the challenged measures were inherently irrational.
Beyond factual challenge, the court addressed the constitutional ground under Article 12(1). The applicants argued that unvaccinated persons were not equally situated with vaccinated persons and that the differential treatment lacked constitutional justification. The court analysed the relevant equality framework by examining whether unvaccinated persons faced higher risks of serious illness and death, whether they were more likely to be infected and facilitate onward transmission, and whether they placed greater strain on the healthcare system. The court treated these considerations as relevant to whether the groups were “not equally situated” for the purposes of Article 12(1). On that basis, the court found that the applicants’ Article 12(1) challenge did not establish a reasonable suspicion of constitutional unlawfulness.
Finally, the court considered whether declaratory relief should be granted. Declaratory relief is discretionary and typically requires that the court be satisfied that the applicant has an arguable case and that the declarations sought would serve a useful purpose. Given the court’s conclusions on leave and the absence of a reasonable suspicion of unlawfulness or irrationality, the court declined to grant the declarations that the applicants sought. The court’s approach underscores that declaratory relief cannot be used to circumvent the leave threshold where the underlying judicial review grounds are not made out.
What Was the Outcome?
The High Court refused to grant leave to the applicants to commence judicial review proceedings to quash the Unvaccinated Medical Bills Policy and paragraph 7(c) of the October Advisory. The court held that the applicants did not satisfy the threshold requirements for leave, particularly the reasonable suspicion requirement that the impugned measures were unlawful or irrational.
Consequently, the court also declined to grant declaratory relief that the October Advisory and the Unvaccinated Medical Bills Policy were unlawful and/or irrational. The practical effect of the decision is that the challenged policies remained in force and the applicants did not obtain judicial confirmation that the Government’s measures were legally defective.
Why Does This Case Matter?
This case is significant for administrative law and public law practitioners because it illustrates how the Singapore courts apply the leave stage as a substantive filter in judicial review, especially in high-stakes policy contexts such as pandemic governance. The court’s reasoning demonstrates that where the Government advances policy rationales supported by evidence and where the applicants’ criticisms do not meaningfully undermine those rationales, the threshold for “reasonable suspicion” will not be met.
For constitutional and equality analysis, the decision is also instructive. The court’s Article 12(1) reasoning shows that differential treatment in public health policy may be constitutionally defensible where the groups are not equally situated due to differences in risk profiles and impacts on the healthcare system. This is particularly relevant for future challenges to public health measures that differentiate between groups based on vaccination status or other risk-related factors.
From a litigation strategy perspective, the case highlights the importance of evidential precision and analytical coherence when challenging policy rationales. The court engaged with the applicants’ statistical arguments, including assumptions about population equivalence and the correctness of calculations. The judgment suggests that applicants must do more than point to alternative interpretations of data; they must show that the Government’s factual basis is sufficiently flawed to raise a reasonable suspicion of illegality or irrationality.
Legislation Referenced
- Executive in exercising its discretion under an Act (as referenced in the case metadata)
- Penal Code (as referenced in the case metadata)
Cases Cited
Source Documents
This article analyses [2022] SGHC 141 for legal research and educational purposes. It does not constitute legal advice. Readers should consult the full judgment for the Court's complete reasoning.