Rear-End Collision Claims in Ontario: Liability, Whiplash, and the MIG Battle

Why Rear-End Collisions Are Aggressively Defended

Rear-end collisions are Ontario’s most frequent accident type and the primary source of soft-tissue injury claims. Insurance companies devote substantial resources to minimizing payouts — not because liability is typically disputed (the rear driver is almost always at fault) but because injury severity is almost invariably contested. The fight is over the nature and extent of injuries sustained, not who caused the accident.

Liability in Rear-End Collisions

Ontario’s Highway Traffic Act requires drivers to maintain a safe following distance. A driver who strikes a vehicle from behind faces a strong presumption of negligence — they either followed too closely, were distracted, or failed to react appropriately. Defences including sudden braking by the lead vehicle or debris in the roadway are possible but difficult to establish.

The MIG and Rear-End Whiplash Claims

Whiplash-associated disorders are the quintessential MIG injury, and insurers apply the $3,500 cap reflexively to all rear-end soft-tissue claimants. Challenging MIG classification requires: documentation of pre-existing conditions that prevent MIG recovery; psychological assessments confirming a post-traumatic diagnosis; and medical evidence from a physiatrist establishing injury severity inconsistent with the MIG category. Developing this evidence promptly is crucial.