[RetirementPlan]^[DefinedContribution],
[RetirementPlan]^[DefinedBenefit],
[Payroll]^[HourlyPayroll],
[Payroll]^[SalariedPayroll],
[EmployeeType]->*[RetirementPlan],
[EmployeeType]->*[Payroll],
[Employee]*->[EmployeeType],
[Department]-*[Employee]