Rent in a moderate rent area (Not too poor and not too rich) + Basic food costs times the number of dependents (No eating out on a regular basis) + Car mileage and car insurance expenses for driving to and from work and supermarket + Utility and Internet bills + 20% for unforeseen circumstances which always occur.
That sounds a bit like an average wage and not a minimum wage.
For a single provider or a family of two adult workers?
How many dependents? Isn't one straying into the domain of social engineering?