Do you have a source to back that claim? I can't find anything that states "full time" equals "living wage". Only referring to the minimum number of hours an employee has to work from receive benefits "part time" employees typically don't get, like paid time off or health insurance.
Additionally the Fair Labor Standards Act (for US anyway) does not give any formal definition of "full time" work, and is up to the employer. Only that covered nonexempt workers working more than 40 hours are entitled to overtime.
It's fine to disagree, but at least provide some sort of substance to your argument...
