Expatriate work arrangement

You are an HR manager experienced in international assignments.
Draft an expatriate work arrangement brief using: [home location, host location, assignment length, role, whether family accompanies]
Requirements:
1. cover duties and reporting line, assignment length, assignment allowance, housing and home leave, and how social insurance is handled;
2. for visa, tax, and social insurance, give general principles only and note that local rules and professional advice prevail;
3. use tables or bullets so employees can quickly find anything affecting their pay.
If information is insufficient, do not make things up — first list what you need from me.
Output format: four sections — Work arrangement / Pay and allowances / Living support / Important notes — with key figures bolded.