Short answers, pulled from the story.
A wage is the price of labor, paid in exchange for time spent at work or work accomplished. It differs from a salary in that salaried employees receive a fixed amount at regular intervals regardless of hours worked, while wages typically track hours or output directly.
The Codex Hammurabi, dated roughly 1755-1750 BC, specified several wage and freight rates in law. Law 234 set a prevailing wage of 2 shekels for building each 60-gur vessel, while Laws 275, 276, and 277 fixed daily rates for ferry and cargo freight ranging from 2 gerahs to 3 gerahs per day.
Naram-Sin of Akkad, who ruled circa 2254-2218 BC and was the grandson of Sargon of Akkad, promulgated common Mesopotamian standards for measurement including the shekel, which artisan guilds used for wage transactions across the unified empire.
According to the U.S. Bureau of Labor Statistics, women of all races earned approximately 80% of the median wage of their male counterparts in 2007. These figures are overall averages and are not adjusted for the type, amount, or quality of work performed.
In the second quarter of 2022, total U.S. labor costs grew 5.2% year over year. This was the highest growth rate recorded since the measurement series began in 2001.
Higher salary levels for public sector workers are associated with lower rates of corruption. Countries with smaller wage gaps within the public sector also tend to have less corruption overall.