Final answer:
To maintain joint employer status, the host employer should directly reimburse a temporary employee for expenses to ensure compliance with workplace health and safety requirements and to treat them like a permanent employee.
Step-by-step explanation:
To maintain joint employer status and comply with workplace health and safety requirements, it is a best practice for the host employer to directly reimburse a temporary employee for expenses. This ensures that the temporary worker is treated like a permanent employee and their well-being is taken into account. By doing so, both the staffing agency and host employer share responsibility and accountability for the worker's safety and health.