Construction remains one of the highest-risk sectors in Kenya. Collapses, falls from height, electrocutions, and struck-by incidents make headlines, but the daily compliance gap is quieter: sites working without DOSH registration, missing statutory signage, and no annual occupational safety and health audit. The Occupational Safety and Health Act (OSHA) 2007 places enforceable duties on employers and occupiers of workplaces — including temporary construction sites — and the Directorate of Occupational Safety and Health Services (DOSH) has powers to issue improvement and prohibition notices that stop work immediately. Cadreatech integrates HSE with engineering supervision so safety is not a folder of unsigned toolbox talks.
OSHA 2007 duties on construction sites
OSHA 2007 requires employers to provide and maintain a workplace that is safe and without risks to health, so far as is reasonably practicable. On construction sites, the developer, main contractor, and subcontractors each carry duties proportional to their control of work. Practical obligations include safe systems of work for excavation, formwork, and steel erection; competent supervision; suitable plant and personal protective equipment; welfare facilities; and reporting of accidents and dangerous occurrences to DOSH within statutory timeframes.
The Act applies from the moment workers mobilise — not from structural completion. Earthworks, piling, and temporary works are among the most hazardous phases, yet developers sometimes assume HSE obligations begin when the contractor is appointed without verifying the contractor’s safety management system. Cadreatech supports developers and contractors with site safety programmes aligned to DOSH expectations: inductions, hazard registers, inspection schedules, and coordination with structural inspection visits so one mobilisation addresses engineering and safety outcomes together.
Developers who treat OSHA as “the contractor’s problem” discover otherwise when DOSH issues a prohibition notice to the site occupier — often the landowner or developer — and lenders withhold drawdowns pending proof of compliance. See construction site safety programmes for how Cadreatech structures HSE on Kenyan sites.
Enforcement intensity has increased on Nairobi metro sites where high-rise activity concentrates labour and plant. DOSH inspectors photograph missing edge protection, inadequate ladder access, and live electrical panels without covers — deficiencies that take hours to fix but trigger weeks of programme delay once a prohibition notice is served. Proactive registration and visible safety leadership on site reduce inspection friction.
- Safe excavation, edge protection, and scaffold systems
- Electrical installations and temporary power arrangements
- Plant inspection — cranes, hoists, batching plants
- Accident and dangerous occurrence reporting to DOSH
- Worker welfare — sanitation, drinking water, first aid
A prohibition notice does not negotiate with your programme float. It stops work until DOSH is satisfied — and every day of standstill flows through your preliminaries.
DOSH registration vs NCA registration
National Construction Authority (NCA) registration and DOSH project registration serve different purposes and both may apply to the same site. NCA registers contractors and projects under the National Construction Authority Act, demonstrating contractor classification and project notification to the construction industry regulator. DOSH registration under OSHA notifies the occupational safety regulator that a workplace exists and triggers expectations for site safety management, inspections, and annual audits.
A contractor can be NCA-registered yet non-compliant on DOSH project registration. Developers should verify both before first concrete pour. DOSH project registration guidance explains submission documents, timelines, and how registration interacts with county building permits. Cadreatech prepares registration packs alongside mobilisation programmes so HSE is live when the site hoarding goes up — not three months after neighbours complain about unsafe scaffolding.
The Cadreatech EHS hub coordinates DOSH, NEMA, and county tracks because they are parallel, not sequential. A site that is environmentally licensed but DOSH-unregistered is still exposed to enforcement. Integrate registration checklists into your pre-contract employer requirements document.
Annual OSH audit requirements
Workplaces in Kenya — including construction sites while they remain places of work — require annual safety and health audits conducted by DOSH-approved safety advisers. The audit examines policy, training, hazard control, plant maintenance, emergency preparedness, and statutory records. For long-duration projects spanning eighteen months or more, multiple annual audits may fall due before practical completion.
Cadreatech delivers occupational health and safety audits that align with how DOSH inspectors evaluate construction sites. We close findings with engineering-backed corrective actions: if edge protection failed inspection, our structural team specifies the remedial detail rather than leaving the contractor to improvise. Audit certificates support lender monitoring covenants and demonstrate due diligence after incidents.
Budget for annual audits in preliminaries alongside environmental monitoring. Treating audits as a one-off pre-handover exercise is a common mistake on phased estates where different contractors rotate through the site across years.
Audit findings should feed a living action register shared with the main contractor and developer site representative. DOSH may revisit within the audit validity period if serious non-conformities remain open. Closing actions with photographic evidence and engineer sign-off demonstrates culture — not only paperwork.
Integrating HSE with engineering supervision
The most cost-effective HSE model on Kenyan construction sites combines safety inspections with engineering supervision visits. When Cadreatech’s structural engineer inspects formwork before a pour, the same walkthrough records scaffold ties, edge protection, and access routes. When our civil engineer reviews drainage installation, trench shoring and confined-space risks are assessed simultaneously. Duplicate mobilisations cost money; integrated visits cost less and catch hazards engineers are trained to recognise.
This integration matters at handover too. As-built engineering records and HSE close-out documentation should tell a consistent story for occupation certificates and investor due diligence. A tower that passed structural inspection but lacks audit trails for tower crane maintenance creates liability that outlives the construction loan.
Developers should specify integrated supervision in consultant appointments and main contract schedules. Separate HSE consultants who never speak to the structural team produce reports that contradict site methodology — and DOSH notices when methodology and reality diverge.
Toolbox talks alone do not satisfy OSHA. Cadreatech delivers site safety programmes with hazard identification tied to the actual work programme — excavation this week, steel erection next, façade installation after. When the engineering inspection schedule aligns with HSE themes for each phase, workers hear consistent messages from the same visiting team.
Frequently asked questions
What is a DOSH prohibition notice?
A prohibition notice orders work to stop immediately where DOSH believes there is risk of serious personal injury. It remains in force until the inspector is satisfied remedial action is taken. Prohibition is more severe than an improvement notice, which allows work to continue with a compliance deadline.
How quickly must accidents be reported to DOSH?
Fatal accidents and specified dangerous occurrences must be reported promptly under OSHA regulations. Delays damage regulatory relationships and insurance claims. Cadreatech helps clients maintain incident registers and notification protocols from site mobilisation.
Who is responsible for HSE — the developer or the contractor?
Both. The contractor controls day-to-day methods; the developer or occupier retains duties for the workplace as a whole. Contracts should allocate responsibilities clearly, but DOSH may enforce against any party with control.
Does DOSH registration replace NCA project registration?
No. They are separate statutory requirements administered by different bodies. Verify both before mobilisation.
Are annual OSH audits required for small residential sites?
If the site is a workplace with employees — including construction workers — annual audit requirements apply under OSHA. Scale affects scope, not the existence of the duty.
Need DOSH registration support or an annual OSH audit on your construction site? Cadreatech serves developers and contractors across Nairobi and Kenya. Request a consultation or call +254 719 532 233.
