What sets the interval
The frequency follows the workplace's hazard class and the agents the worker is exposed to. Noise, dust, chemicals, vibration and shift work change both the interval and the tests to be done.
Content follows exposure
Giving everyone in a workplace the same examination is common but wrong. A worker on a noisy line and one in an office cannot have the same tests; the examination looks at the organ system the exposure affects.
The result must return to the work
If the examination produces a finding, the finding must return to the work: a change of role, rotation, additional protection or environmental measurement. A finding filed and forgotten reduces surveillance to record-keeping.
In Optifora
The health surveillance module builds the schedule from exposure; it lists upcoming examinations, ties findings to tasks, and shows them on the same screen as environmental measurement results.