Margaret, who is 67 years old, is employed by Exotic Cars Limited to show clients around the manufacturing plant. An accident at work has meant she has had to reduce her working hours to 10 hours per week. Her income for the year will be about $30,000. Provide Margaret with advice on: 

a. The level of superannuation contributions her employer is legally required to contribute on her behalf? 

b. Specific types and amounts of additional superannuation contributions Margaret can make to superannuation?

 c. What specific taxation and Government incentives/ concessions are available on the above superannuation contributions?