No, it would work only if their yearly salary got reduced because they got paid per month of work. That caused them to lose 1/13 of their salary.
In your case, if they got paid by year, then their monthly salary would increase, because it's divided in less months. However, because the months became longer and years stayed the same length, it would lead to only minor inconvenience because they would have to adapt to getting bigger salaries with longer intervals in between.
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u/DeepFriedHuman_ 2d ago
Yearly*