Calculate Minimum Payment per Hour

Hey,

I'm not sure if I totally understand your requirement, but here you'll find a little pbix file

I created two calculated columns and one measure

Worked Units - this columns sums the units per Worker | Day | Hour

Worked Units = 
CALCULATE(
	SUM('Table1'[Units])
	,ALLEXCEPT('Table1',Table1[Worker ID],'Table1'[Day],Table1[Reporting Hour])
) 

I changed the default aggregation to Average.

The 2nd calculated column just calculates the extra payment. This column is hidden from the Report View

The Measure "Extra Payment" calculates the measure that is applicable for each worker | day | hour

Extra Payment = 
CALCULATE(
	SUMX(
	SUMMARIZE('Table1',Table1[Worker ID],Table1[Day],Table1[Reporting Hour],"ExtraPayement", AVERAGE(Table1[Extra Payments]))
	,[ExtraPayement])
)

 This measure aggregates the calculated column "Extra Payment" using the AVERAGE() function.

This is inside the SUMX() so that Worker 1 has an Extra Payment of 7, 3 from working hour 15 and 4 from workig hour 16.

Hope this is what you are looking for

Regards