The move follows a series of cases involving employees at the life insurer and marks an escalation from document-based supervision to direct examination of its internal controls.
Stronger underwriting across motor, fire and casualty insurance helped offset higher catastrophe losses, while overseas investment income supported earnings growth.
The joint venture between vrs Adjusters and Uchiyama Loss Adjusting, announced in April, coordinates cross-border claims for Japanese insurers and corporates across Asia-Pacific.
Lower volumes in key non-life classes weighed on premiums, while stronger claims performance and lower reserve provisioning boosted the reinsurer's underwriting profit.
