Contributory causes clause in accident insurance

Purpose

The contributory causes clause reflects the fact that an accident rarely acts in isolation; its health consequences are often amplified by illness or infirmity the life insured already had. Because private accident insurance is meant to cover pure accident risk only, the clause provides for a proportionate reduction of the benefit where such pre-existing conditions contributed to the injury sustained or to its consequences.

Effect and limits

Once the contributory share reaches a defined threshold – under common model conditions usually from 25 per cent – the benefit is reduced by the corresponding percentage. Below that threshold, no reduction is typically applied at all. The reduction affects all accident-related benefits, in particular the disability benefit, though its effect on daily benefits or the death benefit can vary by wording. The burden of proving the contributory share generally lies with the insurer and is usually established through a medical report.

Negotiation and practice

In practice, disputes most often centre on the precise assessment of the contributory share, since medical opinions can differ; an umpire opinion or an expert procedure can help resolve disagreement. For individuals with known pre-existing conditions, such as joint degeneration or osteoporosis, it is worth specifically checking whether the plan sets a minimum threshold before any reduction applies, or whether the clause can be bought out for an additional premium.

Under German law, the contribution of concurrent illness and infirmity is anchored as a basic mechanism in Section 182 VVG, though the actual reduction scale is only set out in the policy conditions. Switzerland and Austria have no comparable direct statutory rule for private accident insurance, so the reduction mechanics there rest entirely on the relevant general policy conditions, which follow the DACH market standard.