I’m not sure if I’m adding anything new, but:
A just wage must be something that fairly meets the needs of both individuals- the employee, and the employer. The employer is worthy of a just wage as well- if we say to ourselves that an employee, regardless of their position, is owed “enough to support themselves” (whatever we consider that to mean- just the essentials, or some luxury as well?)- then what do we have to say about the person paying them? Are they deserving only of the same as their employee?
A just wage, in my opinion (this is nothing but my opinion), shouldn’t be considered anything besides what the position is worth. The just wage can be said to be the minimum amount that the employee is worth for their time and talents- any pay above that is a courtesy, anything below is theft. Some guides can help us determine what this “just wage” is.
Firstly, what kind of work is being performed? Is it something that someone with minimum skills can do, or is it something requiring some sort of prolonged training or education? The employee’s time for that training, and the talents derived from it, should be considered.
Secondly, how intense is the work? Are there long periods of rest, where they’re still on the clock but aren’t busy? For example, I used to work in a deli, and while we were busy often, we sometimes had a lot of down time as well. We still got paid for this time, and that is just, because while we weren’t actively doing something, we were spending our time there for our employer. We should also consider what the task does to the mind and body. Very “menial” jobs usually aren’t so mentally taxing, but they certainly take a toll on the body. Employers need to keep this is mind when deciding what to pay their employees. If they aren’t willing to pay so much “up front”, they had better have a great healthcare plan and pension.