When harm is caused by multiple injurers, damages are allocated among the responsible injurers in proportion to their relative responsibility for harm. This Article shows that a proportional allocation of liability between strictly-liable injurers distorts incentives to take precautions. The...

Distributing liability according to injurers' relative fault produces incentives for rent-seeking (excessive care) or free-riding (insufficient care) if precautions are complements or substitutes. We show that composite sharing rules consisting of different weights of proportional and equal...