An employee resigns giving one month notice. However, he stops coming to duty after completing 20 days, i.e., 10 days short of the notice period. He has worked for nearly 2.5 years. The company has not given any appointment letter. His full and final constitutes last working month's salary, bonus, and leave encashment. Is it legal to deduct Notice Pay for 10 days from his full and final? What does the law say regarding Notice Pay?