ASP.NET MVC5 Stored Procdure Output Error

USE [College]
GO

ALTER PROCEDURE [dbo].[Usp_Employee]
    @Mode TINYINT =NULL
AS
BEGIN
    IF @Mode=1
    BEGIN
        SELECT  EmplId,EmplName,EmpRole,Salary from [dbo].[Employee]
        ORDER BY EmplName;
    END
    ELSE IF @Mode=2
    BEGIN
        SELECT  EmplId,EmplName from [dbo].[Employee]
        ORDER BY EmplName;
    END
END

namespace MVCQuestion.Models
{
    using System;
    using System.Collections.Generic;

    public partial class Employee
    {
        public short EmplId { get; set; }
        public string EmplName { get; set; }
        public string EmpRole { get; set; }
        public Nullable<int> Salary { get; set; }
    }
}

@model IEnumerable<MVCQuestion.Models.Employee>

@{
    ViewBag.Title = "Index";
}

<h2>Employee Name and Role h2>
<table class="table">
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.EmplName)
        th>
        <th>
            @Html.DisplayNameFor(model => model.EmpRole)
        th>
        <th>th>
    tr>

@foreach (var item in Model) {
    <tr>
        <td>
            @Html.DisplayFor(modelItem => item.EmplName)
        td>
        <td>
            @Html.DisplayFor(modelItem => item.EmpRole)
        td>
    tr>
}

table>

using MVCQuestion.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace MVCQuestion.Controllers
{
    public class EmployeeController : Controller
    {
        CollegeEntities objDbContext = new CollegeEntities();
        // GET: Employee
        public ActionResult Index()
        {
            var Query = "exec [dbo].Usp_Employee @Mode=2";
            var Output = objDbContext.Database.SqlQuery<Employee>(Query).ToList<Employee>();
            return View(Output);
        }
    }
}