Strategy Design Pattern implementation - Salary and Permit Scenarios

StrategyDesignPattern.cs

public interface ISalaryCalc
    {
        decimal GetSalary();
    }

    public class EngineerSalaryCalc
        :ISalaryCalc
    {
        public decimal GetSalary()
        {
            Console.WriteLine("Engineer -> Salary");
            return 2500;
        }
    }

    public class ManagerSalaryCalc
        : ISalaryCalc
    {
        public decimal GetSalary()
        {
            Console.WriteLine("Manager -> Salary");
            return 5000;
        }
    }

    public class TecnicianSalaryCalc
        : ISalaryCalc
    {
        public decimal GetSalary()
        {
            Console.WriteLine("Tecnician -> Salary");
            return 1000;
        }
    }


    public interface IPermitCalc
    {
        short GetPermitCount();
    }

    public class ManagerPermitCalc
        : IPermitCalc
    {
        public short GetPermitCount()
        {
            Console.WriteLine("Manager -> PermitCount");
            return 30;
        }
    }

    public class TecnicianPermitCalc
        : IPermitCalc
    {
        public short GetPermitCount()
        {
            Console.WriteLine("Tecnician -> PermitCount");
            return 15;
        }
    }

    public class EngineerPermitCalc
        : IPermitCalc
    {
        public short GetPermitCount()
        {
            Console.WriteLine("Engineer -> PermitCount");
            return 25;
        }
    }

    public class Staff 
    {
        private ISalaryCalc _salaryCalc;
        private IPermitCalc _permitCalc;
        public Staff(ISalaryCalc salaryCalc,IPermitCalc permitCalc)
        {
            this._permitCalc = permitCalc;
            this._salaryCalc = salaryCalc;
        }

        public decimal GetSalary() 
        {
            return this._salaryCalc.GetSalary();
        }

        public short GetPermitCount() 
        {
            return this._permitCalc.GetPermitCount();
        }
    }