Bible indicates this payment. But this is payment for one-time services, seasonal work, because the payment was above average.
Not every day the mercenaries found work. For example, in the parable of the workers in the vineyard (
Mt 20:1-16)
Jesus paid the same and those who worked in the morning, and those who worked only the last hour. For that the first murmured.
Jesus paid everyone a full price.
The fact is that usually people came to the market and stood there waiting to be hired. Carpenters came with their tools, etc. It was not always possible to find a job. But in this situation, those people did not disperse when the work day was almost over. Jesus rewarded them for their perseverance. Also perhaps the reason for their zeal was a great need and Jesus rewarded them.
I compared this style of work with the work of a shabashnik. And not by chance, because "Sabbath" comes from the Jewish "Shabbat."
