Code:
import tkinter
from tkinter import ttk

window = tkinter.Tk()
window.title("Employees Management Form")
window.geometry('600x600')
window.configure(background="white");

class EmployeeForm():

    def __init__(self):
        #labels for the Entries
        lblName = ttk.Label(window, text="Name").grid(row=0, column=0)
        lblId
...