The current contribution rate is 9.9% of earnings, half of which is paid by the employer and half by the employee. That rate would increase; half of it would be paid by the employer and half by the employee. It comes out of earnings. Certainly it's taken into account when the employer fixes earnings. The cost to the employer is not necessarily going to be onerous, because it means the employee's wages would be adjusted accordingly.
On November 19th, 2009. See this statement in context.