Remaining Work Hours Calculation Using DAX

Pseudo Code Objective:

The goal is to calculate the remaining work hours for each employee based on the current week number of the year using DAX.

Pseudo Code Logic:

1. Input Data Assumptions:

   • You have a table Employees with columns: EmployeeID, AvailableHours.
   • You have a table Dates with columns: Date, WeekNumber.
   • Assume there are 52 weeks in a year.

2. Calculation Steps:

   1. Determine Current Week Number: Identify the current week number based on the current date.
   2. Calculate Projected Work Hours Left:
      • Calculate total hours already used up to the current week.
      • Subtract used hours from the available hours to get the remaining hours.

3. Create a DAX formula following these steps.

Pseudo Code in DAX:

// Define the current week number
CurrentWeekNumber = LOOKUPVALUE(Dates[WeekNumber], Dates[Date], TODAY())

// Define total number of weeks in a year
TotalWeeksInYear = 52

// Calculate working hours used up to the current week
HoursUsedUsingCurrentWeek =
    DIVIDE(
        (TotalWeeksInYear - CurrentWeekNumber + 1) * Employees[AvailableHours],
        TotalWeeksInYear
    )

// Calculate remaining work hours for each employee
RemainingWorkHours = 
    Employees[AvailableHours] - HoursUsedUsingCurrentWeek

DAX Formula Implementation:

This pseudo code specifies the logical sequence for calculating remaining work hours. An equivalent DAX formula can be crafted in Power BI or Excel:

// Calculate the current week number
VAR CurrentWeekNumber = 
    CALCULATE(
        MAX(Dates[WeekNumber]), 
        Dates[Date] = TODAY()
    )

// Define the total weeks in a year
VAR TotalWeeksInYear = 52

// Calculate hours used up to the current week
VAR HoursUsedUpToCurrentWeek = 
    DIVIDE(
        (TotalWeeksInYear - CurrentWeekNumber + 1) * MAX(Employees[AvailableHours]),
        TotalWeeksInYear
    )

// Calculate remaining work hours
RETURN
    MAX(Employees[AvailableHours]) - HoursUsedUpToCurrentWeek

Explanation:

1. Lookup Current Week: CurrentWeekNumber uses LOOKUPVALUE or CALCULATE to find today's corresponding week number.
2. Total Weeks Assumption: The year is considered to have 52 weeks.
3. Hours Used Calculation: The formula calculates the hours that should have been used up to the current week.
4. Remaining Hours: Remaining hours are then derived by subtracting the used hours from the total available hours.

Summary:

This approach effectively leverages DAX to compute the remaining working hours for employees based on the progression of weeks in a year. The key steps include determining the current week, calculating used hours, and subtracting from available hours. This can be adapted within Power BI to create a clear, dynamic visualization of employee work projections.

For additional learning and advanced techniques, consider exploring Enterprise DNA's training platforms.