[camiller]

For FICA (SS/Medicare) the employer pays as much as the employee. The FICA rate is 15.3% of your base pay(there is an upper limit), you pay half and the employer pays half (except for 2011, stimulus package and all, the employee part of the SS part of FICA is reduced). Typically with most large employers the employer pays 70-80% of the medical insurance premiums, varies by company. Same for Dental, long term disability, etc. Typically the employers overall cost is 20-30% of your salary.