The sandwich rule: lawful either way, indefensible if unwritten
A policy under which holidays or weekly offs falling between two leave days are themselves counted as leave.
What It Does
Charges the holiday or weekly off falling between two leave days as leave. Friday and Monday off becomes four days, not two.
No Statutory Basis
Neither applying it nor omitting it is required by law. It is a policy choice, and both are lawful.
Where It Goes Wrong
Applying it inconsistently, or applying it without having told anyone — the most grievance-generating line in a leave manual.
The sandwich rule decides what happens when a holiday or weekly off falls between two days of leave. Under a sandwich policy, an employee taking Friday and Monday off is charged for Saturday and Sunday as well — four days rather than two. Without it, they are charged two.
There is no statutory requirement either way. Both approaches are lawful, and both are in common use.
What is not defensible is applying the rule inconsistently, or applying it without having told anyone it exists.
The rule bites hardest on exactly the leave patterns employees find most natural — a long weekend, a day either side of a festival — so it generates more grievances per line of policy than almost anything else in a leave manual. An employee who applies for two days and finds four deducted did not misread the policy; in most cases they never saw it.
Three things make it workable. State it plainly in the leave policy, in the same language the deduction will actually follow. Apply it uniformly rather than waiving it for some grades and enforcing it for others. And check that your system is not applying it silently when your written policy says otherwise — inherited leave configurations frequently carry a sandwich setting nobody chose.
If you operate the rule, showing the deduction breakdown at the point of application, before the employee submits, removes most of the argument.
Sandwich Rule FAQs
Is the sandwich rule legal?
Yes. There is no statutory bar on it, just as there is no requirement to apply it. It is a matter of policy.
Does it apply to national holidays?
That depends entirely on how your policy is written. Some policies sandwich weekly offs only; others include declared holidays. Ambiguity here is the usual cause of dispute.
Should we apply it?
It is a genuine trade-off — it discourages leave patterns that leave teams thin around holidays, at a real cost in goodwill. What matters more than the choice is writing it down and applying it consistently.
Does it apply to weekly offs as well as holidays?
Whatever the policy says — and it should say. Ambiguity here is resolved against the employer more often than not.
Does the rule apply to a half day?
Only if the policy says so, and most do not think about it until it happens. Half days either side of a holiday are the case that exposes how loosely the rule was drafted.
Can we apply it retrospectively?
No. Applying a rule to leave already taken under a different understanding is the fastest way to make a modest policy into a grievance.
Stop working this out by hand
Klok applies these rules on every payroll run, from your own attendance and salary data, with the working shown.