Your Universal Credit payments will adjust automatically if your earnings change. It doesn’t matter how many hours you work, it’s the actual earnings you receive that count.
How often you’re paid
Universal Credit payments are made every calendar month, but if you’re working your earnings may be paid differently. In some months this could affect how much Universal Credit you receive.
It is also a good idea to mark on a calendar both the dates of your assessment period and the dates that you will be paid your earnings, you will then be in a position to see the months that any extra earnings will affect your Universal Credit