Yes, under federal electoral law, it is compulsory for all eligible Australian citizens to enrol and vote in federal elections, by-elections and referendums. For further information see Compulsory Voting.
EEOC Regulations require that employers keep all personnel or employment records for one year. If an employee is involuntarily terminated, his/her personnel records must be retained for one year from the date of termination.
You want to maintain a record of how much each employee was paid, and how many hours they worked for their entire tenure at your company. Keep your records for at least five years after the employee leaves, regardless of reason. For exempt employees, of course, you don't need to maintain time records, as their pay is the same regardless of the number of hours worked. However, if you ever misclassified an employee as exempt when she should have been non-exempt, these hours worked records can guide you for paying owed overtime.