Some questions about foreign workers' benefits in Singapore

From 1 January 2010, the minimum coverage of the medical insurance that employers are required to buy and maintain for the inpatient care and day surgery for each of their Work Permit Holders and S Pass holders, will be $15,000 a year.
In this medical insurance, do the employees have to pay part of the money for the insurance? or is the insurance connected with the employees' salary?

Under Work Injury Compansation Act, do the employers and the employees have to pay for the insurance (if work injury compensation is seen as an insurance)? If they have to, do the employers and employees have to share the costs?