When you are on the job, chances are you will have your mobile phone with you – it does not matter what line of work you are in. Whether you are repairing a server, fixing a leak, or installing a telephone line, your phone can ring at any time. It could be a customer with a complaint, you may have to ring a supplier or check the status of an order. And if you have to talk in English, you need to have the necessary skills to understand and be understood, no matter what the situation.