The thing is…
This one has seen employers try to set monthly payday to the 30th of the month.
Now, whether that was incompetence or malice on their part… When this one asked “What about February” the response was almost vacant.
But, in short, in the U.S., it’s the wild west. Details of paydays are between employer and employee with the states only rarely stepping in.
Unless one is in a government job, there isn’t really a solid standard.
This one understands that in other empi- nations there may be more standardization or regulation in this regard. Your concerns were not at all unfounded, apologies if this one implied otherwise.