Ministry-authorised OSGB · serving Bursa and 6 neighbouring provinces

OHS guide · Occupational Health

Occupational Health articles

64 guide articles. Each one covers the legal basis, practical steps and common mistakes.

Occupational Health articles

Frequently asked questions

How often are periodic medical examinations required?

Periodic examinations are required at least every 5 years in less hazardous, every 3 years in hazardous and every year in very hazardous workplaces. For children, young workers and pregnant employees the interval is at most 6 months; the workplace physician may shorten it.

When is a hearing test (audiometry) mandatory?

A hearing test is mandatory where noise exceeds the upper exposure action value of 85 dB(A), and may be offered above 80 dB(A). Noise levels are established by workplace measurements carried out by authorised laboratories.

How often should tests such as spirometry or a full blood count be repeated?

The legislation sets no fixed interval for these tests; the workplace physician decides which tests are needed and how often, based on the job’s risks. See our health surveillance page for details.

How long are employee health files kept?

Personal health files are kept for at least 15 years after the employee leaves. Health information is confidential, and the cost of examinations cannot be passed on to employees.

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