@startuml
abstract class Employee {
    -string name
    -Gender gender
    -string department
    +string Name [readonly]
    +Gender Gender [readonly]
    +string Department [readonly]
    +{abstract} decimal Salary [readonly]
    +Employee(string, Gender, string)
    +override string ToString()
}

enum Gender {
    Male
    Female
    Divers
}

class Worker {
    -decimal hoursWorked
    -decimal wagePerHour
    +decimal HoursWorked [readonly]
    +decimal WagePerHour [readonly]
    +override decimal Salary [readonly]
    +Worker(string, Gender, string, decimal, decimal)
    +Worker(string, string, decimal, decimal)
    +override string ToString()
}

class OfficeEmployee {
    -decimal monthlySalary
    +decimal MonthlySalary [readonly]
    +override decimal Salary [readonly]
    +OfficeEmployee(string, Gender, string, decimal)
    +override string ToString()
}

class Manager {
    +override decimal Salary [readonly]
    +Manager(string, string, decimal)
    +override string ToString()
}

Employee <|-- Worker
Employee <|-- OfficeEmployee
OfficeEmployee <|-- Manager
Employee -- Gender
@enduml