Hi,
Most of the organizations (private companies) try to pay the full month's salary if an employee is sick for 2 weeks to 3 months (this is best practice, as long as they have medical evidence). It doesn't matter if they are claiming medical insurance; this is, however, an added benefit/reward for all the employees in the organization. The insurance cost is paid by the company to the insurance provider on a yearly basis or renewed for all the employees. (Note: Not all employees claim insurance for that particular year.)
I have seen the best practices in larger organizations, for example, companies like Wipro, Philips, NXP, and also in small firms (they treat employees on contract/trainees/consultants in a fair manner). This helps other employees to be motivated and reduces turnover within the organization.
On humanitarian grounds, it's best to be paid and be supportive and treat this case as a special case.
Thanks,
Muriel Miracle
Associate Member (CIPD, UK)