17.2 Medical Surveillance and the Annexure 3 Certificate of Fitness
Key Takeaways
- CR 7(1)(g) and CR 7(8) require every employee to hold a valid medical certificate of fitness specific to the construction work to be performed, issued by an occupational health practitioner in the form of Annexure 3.
- Specific high-risk work carries its own fitness provisions: CR 10(2)(b) for fall risk positions, CR 17(12)(a) for suspended platforms, CR 22(f) for tower crane operators and CR 23(1)(d)(ii) for construction vehicle and mobile plant operators.
- Only the Annexure 3 certificate belongs in the site health and safety file; clinical questionnaires, findings, diagnoses and biological monitoring results are confidential to the occupational medicine practitioner under the National Health Act, the Health Professions Act and POPIA.
- NIHLR 8(2)(a) requires a baseline audiogram before employment or within 30 days of commencement, and NIHLR 8(2)(b) requires periodic audiograms annually for the first three years and thereafter extendable to a maximum of two years absent a referral threshold shift.
- A task change is a re-examination trigger: redeploying a general worker to a fall risk position requires a certificate specific to that work before deployment.
17.2 Medical Surveillance and the Annexure 3 Certificate of Fitness
[!NOTE] SACPCMP Blueprint Context: The Construction Regulations 2014 make a medical certificate of fitness a precondition of employment on construction work, and place it in a specific prescribed form. It is one of the most frequently audited documents on a South African site and one of the most frequently misunderstood in examinations, particularly on the question of what may and may not be filed in the health and safety file.
1. The Statutory Requirement
Two mirror provisions carry the duty:
CR 7(1)(g) — a principal contractor must "ensure that all his or her employees have a valid medical certificate of fitness specific to the construction work to be performed and issued by an occupational health practitioner in the form of Annexure 3".
CR 7(8) — a contractor must ensure the same for all of its employees.
Four elements of that wording are separately examinable:
- Valid — currency matters; an expired certificate is no certificate.
- Specific to the construction work to be performed — a general "fit for work" certificate does not satisfy the regulation. A certificate issued for general labouring does not cover a worker subsequently deployed to a fall risk position or to a confined space.
- Issued by an occupational health practitioner — not by any general practitioner, and not by a nurse without the applicable occupational health qualification.
- In the form of Annexure 3 — the prescribed form of the Construction Regulations 2014.
Related provisions reinforce the requirement for specific high-risk work. CR 10(2)(b) requires the fall protection plan to include the processes for evaluating employees' medical fitness necessary to work at a fall risk position, and the records of those evaluations. CR 17(12)(a) requires every employee required to work on or be supported by a suspended platform to be medically fit to work safely in a fall risk position by being in possession of a medical certificate of fitness. CR 22(f) requires tower crane operators to have a medical certificate of fitness in the form of Annexure 3, and CR 23(1)(d)(ii) requires the same of operators of construction vehicles and mobile plant.
2. What the Occupational Health Practitioner Actually Assesses
The examination content is driven by the job, not by a standard template. For construction work the practitioner typically evaluates:
| Domain | Why it matters on site |
|---|---|
| Cardiovascular and general fitness | Physical demand of the task; suspension tolerance in a harness; heat load |
| Vision | Depth perception for plant operation and work at height; colour vision for electrical work |
| Hearing | Audiometric baseline where the person will enter a noise zone at or above the 85 dBA rating limit |
| Respiratory function | Baseline spirometry where silica, welding fume or other respiratory agents are present; respirator tolerance |
| Musculoskeletal | Manual handling capacity; ability to climb and to self-rescue |
| Neurological and vestibular | Balance and vertigo for work at height and confined spaces; medication effects |
| Epilepsy and syncope history | Absolute or conditional restriction for work at height and plant operation |
| Body mass | Compatibility with harness and fall arrest equipment ratings |
The output is a certificate of fitness carrying a fitness status — fit, fit with restrictions, temporarily unfit, or permanently unfit for the specified work — the restrictions in operational language, the date of examination, and the review date.
3. The Confidentiality Boundary — a High-Yield Examination Point
This is where sites most often break the law without realising it.
- What belongs in the site health and safety file: the Annexure 3 certificate of fitness and nothing more. It records fitness status and restrictions, which the employer needs in order to deploy the worker safely.
- What must never be in the site health and safety file: the clinical history questionnaire, examination findings, diagnoses, spirometry traces, audiogram traces, blood results, biological monitoring results, and any other clinical record. These are confidential medical records held by the occupational medicine practitioner, protected by the National Health Act 61 of 2003, the Health Professions Act 56 of 1974 and its ethical rules, and the Protection of Personal Information Act 4 of 2013, which treats health information as a special personal information category.
A CHSO who finds a lever-arch file of medical questionnaires in the site office has found a serious non-conformance, not a well-organised system. The corrective action is to return the clinical records to the practitioner and retain only the certificates.
Retention differs correspondingly. The certificate in the site file follows the file. The clinical records held by the practitioner carry long statutory retention under the applicable health regulations — for hazardous chemical agents and asbestos the periods extend for decades after the last exposure entry, reflecting the latency of the diseases involved.
4. Baseline, Periodic and Exit Examinations
Medical surveillance is a programme, not a single event:
- Baseline (pre-placement) — establishes the reference against which later change is measured. Under the Noise-Induced Hearing Loss Regulations 8(2)(a), a baseline audiogram must be recorded for a new employee before the employee commences employment or within 30 days of commencement, in accordance with Instruction No. 171, and that baseline then applies to the employee for the rest of his or her working career.
- Periodic — under NIHLR 8(2)(b) the periodic audiogram is obtained in accordance with SABS 083 at least annually during the first three years of employment, and thereafter at intervals which may be extended to a maximum of two years if no referral threshold shift is evident.
- Exit — on termination, closing the record and establishing the employee's status on leaving, which matters both for the worker's future compensation claims and for the employer's defence of them.
5. Practical Site Administration
The controls that keep this area compliant are unglamorous:
- A certificate register cross-referenced to the site access system, so that an expired certificate blocks the access card rather than being discovered at an audit.
- Task-change triggers. A general worker redeployed to a fall risk position needs a certificate specific to that work before deployment, not at the next annual cycle.
- Subcontractor verification at Gate 3. CR 7(8) places the duty on each contractor for its own employees, but the principal contractor's CR 7(1)(c)(iii) competence-and-resources duty and CR 7(5) induction bar mean the certificates must be verified before entry.
- Restriction communication. A "fit with restrictions" certificate is worthless if the supervisor deploying the worker has never read it. The restriction, not the diagnosis, must reach the person allocating work.
[!WARNING] Do not confuse a certificate of fitness with a COIDA medical report. The Annexure 3 certificate is a pre-placement and periodic fitness document required by the Construction Regulations. The W.Cl. 4 first medical report, W.Cl. 5 progress report and related forms are post-injury compensation documents under the Compensation for Occupational Injuries and Diseases Act. They serve different purposes, go to different recipients, and live in different files.
An auditor finds, in Divider 7 of a site health and safety file, a set of completed clinical history questionnaires, spirometry traces and blood lead results for 30 workers, filed alongside their certificates of fitness. What is the correct finding and corrective action?
A general worker holding a current Annexure 3 certificate issued for general labouring is redeployed to install cladding on a facade access cradle. What does the law require before he starts?
Under the Noise-Induced Hearing Loss Regulations, what is the correct timing for baseline and periodic audiometry for a new employee entering a noise zone?