Alliance will bring together commercial- and personal-lines capabilities for agents, insurers and embedded-distribution partners across the US, Europe and Asia.
Higher capital charges on the insurer's investments outpaced growth in its available capital, while cautious risk selection kept its agricultural book profitable.
Formerly of Tokio Marine, Hata leads the renamed EMIS Insurance Services, which offers personal lines cover to group employees and affiliated companies and risk consulting to corporate clients.
Domestic systemically important insurers would need larger boards, while insurers with less retail reach or lower systemic importance would face fewer approvals.
The funds will be disbursed in two IDR10trn (US$557m) instalments, as the insurer seeks to address a cash flow gap between contributions collected and healthcare service payments.