
LOP stands for Loss of Pay. It's the salary an employer cuts for days you were absent with no paid leave left to cover them. The sum is simple: monthly salary divided by the days in the pay period, multiplied by your LOP days. Say you earn ₹36,000 and the month has 30 days. That's ₹1,200 a day, so two LOP days cost ₹2,400. Some companies use LWP (Leave Without Pay) to mean the same thing, and some don't. The formula is rarely the problem. The attendance and leave records behind it usually are.
What the LOP full form actually means
You'll see it on a payslip as a deduction line, often just "LOP days". Nothing mysterious. It means you weren't paid for a day you didn't work and couldn't claim as paid leave.
A day usually turns into LOP when your leave balance is already zero, when you were absent and never applied, or when you chose unpaid leave yourself. Some firms also convert repeated late marks into LOP, though that's a policy choice, not a rule.
Then there's LWP. A few employers treat LWP as approved unpaid leave and LOP as the unplanned kind. Plenty of others use both words for the same thing. If your payslip says one and your policy says the other, ask HR. We've also covered the difference in our guide to loss of pay meaning, LOP vs LWP and examples.
How LOP is calculated
There are two common ways, and they don't give the same answer.
Calendar days. Divide the monthly salary by every day in the month. At ₹36,000 in a 30-day month, one day is ₹1,200. Two LOP days: ₹2,400.
Working days. Divide by working days only, after taking out weekly offs. With 26 working days, a day is about ₹1,385, so two LOP days come to roughly ₹2,769.
Same person, same absence, and a gap of about ₹370. That's why the method needs to be written into the leave policy and applied to everybody the same way. Changing it mid-year is how a quiet payroll query becomes a grievance.
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What about PF and ESI?
Contributions are worked out on pay actually earned. When LOP days cut the earned basic, the PF contribution for that month usually drops too. Don't assume the software got it right. Check one payslip after each cycle.
Why LOP deductions go wrong
Almost never because of maths. It's the records.
Attendance sits in one spreadsheet and leave in another, and they disagree. A manager approves leave on the 29th, after payroll has already closed, so the deduction goes out anyway. Half days get logged differently by different managers. Weekly offs get counted inside a stretch of absence in one team and ignored in another. And joiners and leavers get paid pro rata with no written rule at all.
None of that is hard to fix, but it does mean the fix is about data, not arithmetic.
Handling LOP in OfficePortal
The simplest way to cut disputes is keeping attendance, leave and pay in one system. In OfficePortal, people mark attendance by web check-in, GPS, biometric or QR using attendance tracking software. Leave requests, approvals and balances live in the leave management system, and balances update as approvals come through.
When a day is disputed, employee timesheet software shows the hours that were logged. Then cloud-based payroll software works out the deduction from the same approved records, so nobody reconciles a second spreadsheet at month end.
It matters most for retail teams running rotating shifts across stores. One missed approval there can quietly turn an ordinary day into a deduction.
Getting a wrong LOP reversed
Mistakes happen. If a day was marked LOP by error, the employee sends a request with something to back it up, like a manager's approval or a screenshot of the system fault. HR checks it, and if it's accepted the money comes back in the next pay run. The faster the record is corrected, the fewer of these requests land on your desk. Our note on LWP leave rules and salary impact covers some of the odd cases.
Conclusion
The LOP full form is easy to remember. Getting the deduction right is the harder bit, and it comes down to clean attendance and leave data. OfficePortal keeps attendance, leave and payroll together, so the deduction comes from records HR has already approved. You can try the leave management system free for up to five users.


