How the Lithuania kasmetinės atostogos calculator is verified

Inputs

Input	Field	Type
Working week	`weekSystem`	string
Under 18, single parent of a child under 14 (or a disabled child under 18), or a worker with a disability	`protectedCategory`	boolean
Working days already taken	`daysTaken`	number

The formula

Each derived value below is computed by the Valem engine from the expression shown, in this order. Nothing else runs — there is no hidden code path.

Derived value	Field	Formula (JSONata)
Days Entitled	`daysEntitled`	`protectedCategory ? (weekSystem = 'six' ? $const.protectedSix : $const.protectedFive) : (weekSystem = 'six' ? $const.baseSix : $const.baseFive)`
Days Remaining	`daysRemaining`	`($r := daysEntitled - $n(daysTaken); $r < 0 ? 0 : $round($r, 1))`

Rates and thresholds

The expressions above read these as $const. They are the figures the annual refresh replaces, so they live as data rather than being written into the formulas — which is what makes a year-on-year change a one-line diff instead of an edit to arithmetic.

Constant	Value
`baseFive`	20
`baseSix`	24
`protectedFive`	25
`protectedSix`	30

Test vectors (5)

Every case is executed against this model on each build, by the Java engine and independently by a JavaScript one. A mismatch of a single cent fails the build, so the page cannot ship advertising a figure the model no longer produces.

Case 1 — LT1 five-day week: 20 working days

given `weekSystem`	five
given `protectedCategory`	no
given `daysTaken`	0
expect `daysEntitled`	20

Case 2 — LT2 six-day week: 24

given `weekSystem`	six
given `protectedCategory`	no
given `daysTaken`	0
expect `daysEntitled`	24

Case 3 — LT3 protected group, five-day week: 25

given `weekSystem`	five
given `protectedCategory`	yes
given `daysTaken`	0
expect `daysEntitled`	25

Case 4 — LT4 protected group, six-day week: 30

given `weekSystem`	six
given `protectedCategory`	yes
given `daysTaken`	0
expect `daysEntitled`	30

Case 5 — LT5 never negative

given `weekSystem`	five
given `protectedCategory`	no
given `daysTaken`	40
expect `daysRemaining`	0

Sources

Lietuvos Respublikos darbo kodeksas, 126 straipsnis — kasmetinių atostogų trukmė (suvestinė redakcija nuo 2026-06-07 iki 2026-10-31) · checked 2026-10-12

Check it yourself — and reuse it

The whole model as JSON — inputs, outputs, formulas, vectors and sources in one re-runnable document.

This model is published under CC BY 4.0: use it, adapt it, build on it, with attribution. The licence covers the model — the expression of each rule and the arrangement of the catalog. The rates and thresholds are law, and nobody licenses those; the sources above are where they come from.

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