{
  "id": "policy/sin-not-required-before-starting-work",
  "signature": "AI tells a newcomer to Canada they must have their Social Insurance Number (SIN) in hand before they can legally start a job",
  "signature_zh": "",
  "regex": "(social insurance number.*(before|start work)|sin.*canada.*(required|before).*(work|job)|canada.*(work|job).*without.*sin)",
  "domain": "policy",
  "category": "administrative_barrier",
  "subcategory": null,
  "root_cause": "Employment and Social Development Canada's SIN Code of Practice states that a new employee without a SIN is not prevented from working while they wait for one. They must apply for a SIN within 3 days of their employment start date, and once issued, must give it to the employer within 3 days of receiving the SIN confirmation. Employers must collect the SIN within 3 days of the employee's start date, but that collection deadline does not block the employee from beginning work first.",
  "root_cause_type": "generic",
  "root_cause_zh": "",
  "versions": [
    {
      "version": "any",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "Tell a newcomer or new hire they cannot legally start their job until they physically have a SIN",
      "why_fails": "Service Canada's own SIN Code of Practice for employers states plainly: 'This doesn't prevent the individual from working before getting their SIN.' A new employee eligible to work in Canada is told to apply within the first 3 days of employment, not to wait for the number before starting.",
      "fail_rate": 0.75,
      "condition": "Newcomer with confirmed work authorization but no SIN yet",
      "sources": [
        "https://www.canada.ca/en/employment-social-development/services/sin/reports/code-of-practice.html"
      ]
    },
    {
      "action": "Assume the employer can legally wait indefinitely, or refuse to onboard, until the employee's SIN is confirmed",
      "why_fails": "Every employer in Canada must collect the SIN within 3 days of the employee's start date so they can report earnings and remit CPP/EI contributions; treating SIN collection as an open-ended prerequisite rather than a fixed 3-day post-start obligation misstates the employer's own compliance deadline.",
      "fail_rate": 0.4,
      "condition": "Employer onboarding a new hire without a SIN yet",
      "sources": [
        "https://www.canada.ca/en/employment-social-development/services/sin/reports/code-of-practice.html"
      ]
    }
  ],
  "workarounds": [
    {
      "action": "Newcomer applies for a SIN online, by mail, or in person as soon as their grounds for work (job offer plus valid work/study permit or PR/citizenship proof) are confirmed, and starts work without waiting for the confirmation letter",
      "success_rate": 0.9,
      "how": "canada.ca confirms: 'You can start working as soon as you apply for a SIN - you don't need to wait for the number.' Online applications typically show a SIN confirmation letter in about 5 business days.",
      "condition": "Temporary resident or newcomer with valid work authorization",
      "sources": [
        "https://www.canada.ca/en/employment-social-development/services/sin/temporary-residents.html"
      ]
    },
    {
      "action": "Employer records the employee's start date, requests the SIN application be filed within 3 days, and collects the actual SIN within 3 days of the employee receiving their confirmation letter - not before the employee's first day",
      "success_rate": 0.85,
      "how": "Follow the SIN Code of Practice's 3-day / 3-day sequence rather than an informal 'SIN in hand before day one' policy.",
      "condition": "Employer payroll onboarding",
      "sources": [
        "https://www.canada.ca/en/employment-social-development/services/sin/apply.html"
      ]
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.75,
  "fix_success_rate": 0.85,
  "resolvable": "true",
  "first_seen": "2026-09-02",
  "last_confirmed": "2026-09-02",
  "last_updated": "2026-09-02",
  "evidence_count": 3,
  "tags": [],
  "locale": "en",
  "aliases": [
    "policy/sin-not-required-before-starting-work/ca"
  ]
}