Temp Worker Document Verification Before the First Shift in Canada

A temp worker's file needs three things confirmed before a Canadian staffing agency lets them start a client assignment: every required document is present, each one is still valid — in date, matched against the right official register — and the details on one document match the details on every other document in the same file. Missing any of the three turns a routine placement into a compliance problem weeks later, when the client, the Ministry of Labour, or Quebec's CNESST asks to see the file.

This is a file-completeness and consistency question, not a forgery question. Most first-assignment holdups at Canadian staffing agencies are administrative: a Social Insurance Number never checked against the work permit it depends on, a certification for a role that changed between interview and start date, a legal name spelled one way on a permanent resident card and another on a bank record. Fixing that takes a checklist and a cross-check, not a fraud investigation.

What a complete temp worker file contains

A complete file has seven components an agency should be able to point to before booking a first shift: photo ID, proof of address, work authorization evidence, a Social Insurance Number, role-specific qualifications where relevant, banking details for direct deposit, and a signed assignment agreement. Staffing businesses remain the employer of record under provincial employment standards even when a client hosts the worker day to day, so the paperwork obligation sits with the agency, not the site supervisor.

Under Part XVIII.1 of Ontario's Employment Standards Act, 2000, the temporary help agency — not the client — carries the statutory duties around worker assignment information, pay records, and licence-linked recordkeeping, enforced by the Ontario Ministry of Labour, with a parallel regime run by Quebec's CNESST. A client can refuse an incomplete file, but the retention duty itself does not transfer.

Why the check has to happen before the shift starts, not after

A work authorization check only protects an agency if completed before the individual begins work, not retrospectively once a problem surfaces. Confirming a permit's validity after someone has already worked their first shift does not undo the exposure, even if the worker turns out to have full permission to work.

Employers who hire a foreign national without valid work authorization face administrative monetary penalties under the Immigration and Refugee Protection Act, and repeat or serious violations can bring a permanent ban from the Temporary Foreign Worker Program, per IRCC's employer compliance framework. The agency-licensing side carries its own before-day-one deadline too, covered below.

Work authorization evidence: SIN, permanent residency, and work permits

Canadian citizens and permanent residents establish a permanent right to work once verified correctly the first time, through a passport, citizenship certificate, or PR card, and need no further check for that assignment. Temporary residents are different: a Social Insurance Number beginning with the digit 9 signals a temporary SIN, and under Service Canada's SIN Code of Practice for newcomers and temporary residents, that number is valid only until the expiry date on the worker's underlying study or work permit — when the permit expires, so does the SIN.

That link is the single most common gap in a temp worker file: an agency that checks the SIN card once at intake but never cross-references it against the permit's own expiry date has no way of knowing the worker's authorization has lapsed mid-placement. Employer-specific (closed) permits also restrict the holder to a named employer, location, and occupation, so conditions must match the assignment offered, not just be in date; open permits carry no such restriction. The IRCC Employer Portal verifies status directly against IRCC's own records rather than a photocopy that may already be stale.

Consistency across the file, not just presence of documents

A document being present and in date is not the same as a file being internally consistent. The spelling of a legal name on a passport, the address on a utility bill, and the name on a bank account are frequently close but not identical — a married name still on one document, a maiden name on another, a name transliterated one way on a PR card and another on a foreign birth certificate.

Cross-document validation checks the same field — full legal name, date of birth, current address — against every document in the file at once, the mechanical core of a check a manual reviewer otherwise has to do line by line. That matters most in staffing specifically, because a worker's file is assembled from several independent sources — the worker, a foreign credential assessment service such as WES or IQAS, a training provider, a bank — rather than issued by one employer's HR system.

Where files stall in practice

Staffing coordinators handling volume placements describe two recurring bottlenecks that rarely make it into formal guidance. The first is chasing a candidate for one missing document after a placement has already been agreed with the client, leaving the agency to choose between delaying a promised start date or booking someone with an incomplete file. The second is tracking work permit expiry dates on a spreadsheet rather than a system, where a 900-series SIN quietly ages past its tied expiry date because nobody was assigned to watch the calendar. A related gap: a worker whose qualification was earned outside Canada may still be waiting on a WES or IQAS assessment when a client wants a start date confirmed, and agencies that treat "the assessment is in progress" as good enough are the ones most likely to discover the gap during a client audit rather than before the first shift.

Provincial licensing and audit readiness

Agency licensing is not optional in either of Canada's two largest staffing markets, and neither licence substitutes for verifying an individual worker's file. In Ontario, a temporary help agency or recruiter licence costs $750 per application or renewal, requires an irrevocable letter of credit of $25,000, and — after an October 2025 amendment to O. Reg. 99/23 — now runs on a two-year cycle instead of one. False or misleading information in an application carries penalties of $15,000 for a first violation, rising to $25,000 and $50,000 within a three-year window.

Quebec runs a parallel system: a personnel placement agency needs a licence from the CNESST, costing roughly $1,780 plus a $15,000 security deposit, renewable every two years, under the province's Regulation respecting personnel placement agencies. Operating without one exposes agency and client alike to fines from $600 up to $12,000 for repeat offences — an agency's licensing status is the client's problem too.

A valid licence tells an auditor an agency exists and has posted its security; it says nothing about whether a worker's file is complete, valid, and internally consistent. Building that layer once — a fixed checklist, a recheck calendar keyed to each permit's expiry date, and a cross-field comparison step — removes the need to re-solve it for every assignment.

For a broader look at document verification across regulated sectors, see our guide to document verification by industry. Agencies handling HR-adjacent checks alongside placement work may also find our walkthrough of employment history verification useful, and our breakdown of credential and work authorization checks covers the qualification side in more depth.

CheckFile's security page describes how document data is handled and retained once a file is verified, and the pricing page sets out how verification volume maps to plan tiers. For staffing and recruitment specifically, our staffing solution is built around this exact sequence — completeness, validity, and cross-document consistency — applied before a worker's first day rather than discovered after it.

Frequently Asked Questions

What is temp worker document verification?

It is the process of confirming that every document required for a temp placement is present, still valid, and consistent with the other documents in the same file, before the worker's first assignment begins. It covers identity, work authorization evidence, address, SIN, qualifications where relevant, banking details, and the signed assignment agreement.

How does temp worker document verification work in a Canadian staffing agency?

An agency collects the required documents against a fixed checklist, checks each against the relevant official source (the IRCC Employer Portal for permit status, a provincial regulator or credential assessment service for qualifications), and compares shared fields — name, date of birth, address — across the full set. Temporary SINs starting with 9 get a recheck date logged against the permit's own expiry date.

Why does this matter before the first assignment specifically?

A work authorization check only protects an agency if it is completed before the individual starts work; doing it afterward does not undo the exposure even if the worker was always entitled to work. A client who discovers a missing document mid-assignment will question the agency's whole vetting process, and in Ontario or Quebec an incomplete file can surface during the same inspection that checks the agency's own licence.

Who is legally responsible for work authorization checks when a worker is supplied by a staffing agency?

Under Ontario's Employment Standards Act, 2000 Part XVIII.1, the temporary help agency supplying the worker is the employer of record and carries the recordkeeping and licensing-linked duties, not the client site. Quebec's CNESST regime follows similar logic, though a client that knowingly uses an unlicensed agency in either province can also face penalties.

Does provincial agency licensing remove the need to verify each worker's file?

No. An Ontario THA licence or a Quebec CNESST licence confirms the agency meets financial and registration requirements; it says nothing about whether a worker's identity, work authorization, and banking details have been checked and cross-referenced. Agencies still need their own per-worker verification step regardless of licensing status.