Work Ethic

The phone bill was exceptionally high one month, and the man of the house decided to call a family meeting.
Dad: Listen, all. This is unacceptable. You have to limit the use of the phone. I don't even use this phone - I use the one at the office.
Mum: Same here. I hardly use this home telephone, 'cos I use my work telephone.
Son: Me too, I never use the home phone. I always use my company mobile.
Maid: What is the problem? So we all use our work telephones.