John and Mary work together running a seaside tea shop and are paid an hourly wage.One day their employer phones John to tell him that Mary is ill and will be unable to work for the rest of the week.The employer tells John that he will have to run the tea shop single handed.John does this for the rest of the week.At the end of the week, the employer tells John that he will be paid double wages for the period when he worked on his own.The employer is now refusing to pay the extra money.Advise John as to whether or not he will be entitled to the extra sum.

*Please identify all the key issues address each of them with every legal cases while providing analysis of the case*.

Marks:20