PersonView1.swift

class PersonView: UIView {

    private var titleLabel: UILabel!
    private var birthdayLabel: UILabel!
    private var workButton: UIButton!

    private var person: Person

    private var dateFormatter = DateFormatter()

    init(person: Person) {
        self.person = person
        super.init(frame: .zero)
        setupView()
    }

    private func setupView() {
        dateFormatter.dateStyle = .short
        birthdayLabel.text = dateFormatter.string(from: person.birthday)

        titleLabel.text = person.firstName + person.lastName        
    }

    func workButtonTapped() {
        // Some complicated logic
    }
}