Assessing lifting and carrying – the key indicator method in practice

What the regulation actually requires

German load handling regulations oblige the employer to avoid manual load handling where possible – and, where it is unavoidable, to assess and reduce the risk. Deliberately, no number is given: twenty kilograms handled upright, close to the body, twice a day is something other than the same twenty kilograms in trunk flexion, with outstretched arms, four hundred times a shift. That difference is exactly what the key indicator method captures.

The four indicators, step by step

The data is gathered at the workstation, not at a desk. Each indicator carries a weighting; multiplied by the time share it yields the risk score.

• Load weight – the mass actually handled, weighted by sex
• Posture – upright, bent, twisted, kneeling or above shoulder height
• Execution conditions – space, floor, lighting, grip on the load
• Time weighting – number of operations or duration per working day
• Result: a risk score placed in four bands from low to high

How to read the result

Band 1 counts as low strain, band 2 as increased: a review makes sense for less resilient employees. Band 3 is substantially increased – measures are indicated. Band 4 counts as high: measures are required. What matters equally is what does not follow: a score in the green band is no licence when employees report complaints. The method is an aid to assessment, not a substitute for it.

The three mistakes we see most often

First, frequency is underestimated: the time share enters the risk score in full, and it is exactly what gets talked down when estimating. Second, part weight is entered instead of the mass actually handled – carriers, grip aids and tools count too. Third, the assessment is made once and filed: if cycle, part or layout change, the score changes, and the assessment has to be updated.

What follows from a high score – in this order

German occupational safety law sets a hierarchy. First, check whether manual handling can be eliminated entirely – through conveying, different presentation or a changed sequence. Where it cannot, technical aids follow: lifting aid, manipulator, lift table, tipper. Only then come organisational measures such as rotation and breaks, and last personal ones such as instruction. In practice this order is often reversed – instruction is cheap, but it changes nothing about the risk score.