Build an Automated Employee Time Tracker in Excel (4) Alternative wayUNIQUE • FILTER • Array

Walkthroughs of real‑world Excel formulas and functions to inspire smarter, faster work.

file link:
https://docs.google.com/spreadsheets/d/1p1n0ta2cLyVHSHu02tWp5F5hk1DlshGL/edit?usp=drive_link&ouid=107306437183752606317&rtpof=true&sd=true

Problems
1. Daily Time Tracking
What are the earliest and latest times each day for each employee?

2. Working Hours Compliance
Highlight employees who did not meet the 9-hour working requirement.

3. Lunch Reimbursement
Determine lunch reimbursement amounts for employees who worked through lunchtime.


Solutions
1. Data Generation
Generate random time-tracking data using Python and export it to Excel, covering scenarios like:
Punctual employees
Late arrivals/early departures
Variable working hours
Lunchtime workers

2. Earliest/Latest Time Calculation
Use Excel formulas (MINIFS/MAXIFS) with or without helper columns to identify:
Earliest check-in time per employee/day
Latest check-out time per employee/day

3. Working Hours Validation
Apply conditional formatting to highlight employees with total daily hours below 9 hours.

4. Lunch Reimbursement Calculation
Use SUMIFS and SUMPRODUCT to calculate hours worked during lunch periods (e.g., 12 PM – 1 PM) and apply reimbursement rates.

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