{
  "$comment": "Machine-readable companion to https://valem.run/calculators/poland/holiday-entitlement. Formula, inputs, outputs, engine-verified test vectors, cited sources and the re-runnable Valem ModelSpec behind the page.",
  "url": "https://valem.run/calculators/poland/holiday-entitlement",
  "dataUrl": "https://valem.run/calculators/poland/holiday-entitlement.json",
  "license": {
    "name": "CC BY 4.0",
    "url": "https://creativecommons.org/licenses/by/4.0/",
    "attribution": "Poland urlop wypoczynkowy model by Valem (https://valem.run/calculators/poland/holiday-entitlement), CC BY 4.0.",
    "note": "Covers the model — the expression of each rule and the arrangement of the catalog. The rates and thresholds themselves are law and are not licensed by anyone; the cited sources are where they come from."
  },
  "verificationUrl": "https://valem.run/calculators/poland/holiday-entitlement/verify",
  "country": "poland",
  "countryName": "Poland",
  "formula": "holiday-entitlement",
  "formulaName": "Urlop wypoczynkowy",
  "title": "Wymiar Urlopu 2026 — 20 czy 26 Dni, i Jak Liczyć Etat",
  "answer": "Article 154 § 1 of the Kodeks pracy gives 20 days of paid leave to an employee with less than ten years of employment and 26 days at ten years or more. Part time is pro-rated by working time and a partial day is rounded up, and § 3 caps the result at the full-time figure.",
  "lang": "en",
  "currency": "PLN",
  "taxYear": "2026",
  "verification": {
    "claim": "internal-consistency",
    "statement": "The Valem engine reproduces this model's stated formula through 9 self-test cases (below, and re-runnable against the spec). That asserts internal consistency, NOT that the formula matches current law — the cited sources are the evidence for that, and carry the date each was last checked.",
    "selfTestCases": 9,
    "ratesAreIllustrative": false,
    "sourcesCheckedOn": "2026-10-11"
  },
  "sources": [
    {
      "label": "Kodeks pracy, art. 154 — tekst jednolity, Dz. U. 2026 poz. 1245 (Sejm ELI; stan prawny na 27 sierpnia 2026 r.): the two bands, the part-time proportion with its round-up, and § 3's ceiling",
      "url": "https://api.sejm.gov.pl/eli/acts/DU/2026/1245/text.pdf",
      "checked": "2026-10-11"
    }
  ],
  "terminalOutput": "daysRemaining",
  "headlineOutput": "daysEntitled",
  "inputs": [
    {
      "name": "serviceYears",
      "type": "number",
      "label": "Years of employment (total, any employer)",
      "minimum": 0,
      "maximum": 60
    },
    {
      "name": "employmentPercent",
      "type": "number",
      "label": "Working time as a % of full time",
      "minimum": 1,
      "maximum": 100
    },
    {
      "name": "daysTaken",
      "type": "number",
      "label": "Days already taken",
      "minimum": 0
    }
  ],
  "outputs": [
    {
      "name": "fullTimeDays",
      "type": "number",
      "formula": "($n(serviceYears) >= $const.serviceThresholdYears ? $const.daysFrom10Years : $const.daysUnder10Years)"
    },
    {
      "name": "proportionalDays",
      "type": "number",
      "formula": "fullTimeDays * $n(employmentPercent) / 100"
    },
    {
      "name": "daysEntitled",
      "type": "number",
      "formula": "$clampFloorCap($ceil(proportionalDays), 0, fullTimeDays)"
    },
    {
      "name": "daysRemaining",
      "type": "number",
      "formula": "($r := daysEntitled - $n(daysTaken); $r < 0 ? 0 : $round($r, 1))"
    }
  ],
  "testCases": [
    {
      "description": "L1 under ten years' employment, full time: 20 days",
      "given": {
        "serviceYears": 5,
        "employmentPercent": 100,
        "daysTaken": 0
      },
      "expect": {
        "fullTimeDays": 20,
        "daysEntitled": 20
      }
    },
    {
      "description": "L2 at ten years it steps to 26 — there is nothing in between",
      "given": {
        "serviceYears": 10,
        "employmentPercent": 100,
        "daysTaken": 0
      },
      "expect": {
        "fullTimeDays": 26,
        "daysEntitled": 26
      }
    },
    {
      "description": "L3 nine years is still the lower band: “co najmniej 10 lat” is at least ten",
      "given": {
        "serviceYears": 9,
        "employmentPercent": 100,
        "daysTaken": 0
      },
      "expect": {
        "fullTimeDays": 20,
        "daysEntitled": 20
      }
    },
    {
      "description": "L4 3/4 etatu on the 26-day band is 19.5, which § 2 rounds UP to 20",
      "given": {
        "serviceYears": 12,
        "employmentPercent": 75,
        "daysTaken": 0
      },
      "expect": {
        "proportionalDays": 19.5,
        "daysEntitled": 20
      }
    },
    {
      "description": "L5 half time on the 20-day band is exactly 10, so the round-up changes nothing",
      "given": {
        "serviceYears": 3,
        "employmentPercent": 50,
        "daysTaken": 0
      },
      "expect": {
        "proportionalDays": 10,
        "daysEntitled": 10
      }
    },
    {
      "description": "L6 a third of full time on the lower band: 6.667 rounds up to 7",
      "given": {
        "serviceYears": 3,
        "employmentPercent": 33,
        "daysTaken": 0
      },
      "expect": {
        "daysEntitled": 7
      }
    },
    {
      "description": "L7 § 3's ceiling: the pro-rated figure can never exceed § 1's",
      "given": {
        "serviceYears": 30,
        "employmentPercent": 100,
        "daysTaken": 0
      },
      "expect": {
        "daysEntitled": 26
      }
    },
    {
      "description": "L8 days already taken come off the remainder, and it never goes negative",
      "given": {
        "serviceYears": 12,
        "employmentPercent": 100,
        "daysTaken": 30
      },
      "expect": {
        "daysRemaining": 0
      }
    },
    {
      "description": "L9 days taken below the entitlement leave the balance",
      "given": {
        "serviceYears": 12,
        "employmentPercent": 100,
        "daysTaken": 6
      },
      "expect": {
        "daysEntitled": 26,
        "daysRemaining": 20
      }
    }
  ],
  "spec": {
    "id": "holiday-entitlement-poland",
    "version": "1.0.0",
    "schema": {
      "type": "object",
      "properties": {
        "serviceYears": {
          "type": "number",
          "maximum": 60,
          "minimum": 0
        },
        "employmentPercent": {
          "type": "number",
          "maximum": 100,
          "minimum": 1
        },
        "daysTaken": {
          "type": "number",
          "minimum": 0
        },
        "fullTimeDays": {
          "type": "number",
          "readOnly": true
        },
        "proportionalDays": {
          "type": "number",
          "readOnly": true
        },
        "daysEntitled": {
          "type": "number",
          "readOnly": true
        },
        "daysRemaining": {
          "type": "number",
          "readOnly": true
        }
      }
    },
    "constants": {
      "daysUnder10Years": 20,
      "daysFrom10Years": 26,
      "serviceThresholdYears": 10
    },
    "library": {
      "layers": [
        {
          "id": "statutory",
          "define": "(\n  /* Shared statutory helpers — the canonical copy (docs/sandbox/d8-statutory-families.md §5.4).\n     DO NOT EDIT A SPEC'S INLINED COPY. Edit this file and run `npm run sync:helpers`; a vitest\n     assertion and a Java assertion both require every inlined copy to be byte-identical to this one.\n\n     Why inlined rather than referenced: the `library` section's `ref` form — a library shared\n     between models — is still proposed, gated on the model-references design (see\n     ../../../../docs/design/library/jsonata-library.md). Inlining keeps each spec self-contained,\n     which is what lets `#e=` embedding, `#share=` import and MCP forking work with no resolver.\n\n     TWO TRAPS, both of which fail SILENTLY and both of which bit during the debt-payoff build:\n\n       1. A library function sees ONLY its arguments. It cannot read the consuming document — not\n          through a bare field name, not through `$`, not through `$$`. Everything these helpers\n          need is passed in. (`$const` is late-bound and so would resolve, but relying on it would\n          couple a shared helper to one spec's constant names.)\n       2. ONE null member wrecks a whole aggregate, and the two engines disagree about how. The JS\n          reference implementation THROWS (\"Argument 1 of function sum must be an array of\n          numbers\"); the Java port can instead yield null for the entire aggregate. Neither gives a\n          partial total, and the null-yielding form is the dangerous one because it is silent. So\n          callers coerce with `$n()` below before aggregating, which makes the behaviour identical\n          in both engines — measured, not assumed: see helpers.test.ts.\n\n       3. A PATH STEP DIRECTLY ON A CALL RESULT RETURNS NOTHING in the Java engine. This matters for\n          every caller of $amortize, which is the one helper here returning an object:\n\n              $amortize(p, r, n, 0).months            -> empty in Java, 360 in JS.  WRONG\n              ($a := $amortize(p, r, n, 0); $a.months) -> 360 in both.               RIGHT\n\n          Bind the result to a variable, then step into it. The JS reference accepts both forms, so\n          this is invisible until the page is served by the real engine, and it fails as a blank\n          field rather than an error. Measured with a probe, not inferred — the field simply does\n          not appear. */\n\n  /* Number coercion with an explicit zero default. The guard against trap 2. */\n  $n := function($v) { $v = null or $not($exists($v)) ? 0 : $number($v) };\n\n  /* ISO date -> its year / month / day parts. String slicing rather than $fromMillis formatting:\n     these are statutory dates (\"2026-04-06\"), and a timezone-sensitive round-trip through millis\n     can shift the day, which silently moves a service anniversary across a band boundary. */\n  $isoY := function($d) { $number($substring($d, 0, 4)) };\n  $isoM := function($d) { $number($substring($d, 5, 2)) };\n  $isoD := function($d) { $number($substring($d, 8, 2)) };\n\n  /* Whole years of completed service between two ISO dates. Counts an anniversary as reached only\n     when the month-and-day has arrived, which is what \"completed years of service\" means in every\n     severance statute — not a 365.25-day division, whose drift crosses a 5-year band boundary in\n     the wrong direction roughly one year in four. */\n  $yearsBetween := function($from, $to) { (\n    $y := $isoY($to) - $isoY($from);\n    $beforeAnniversary := $isoM($to) < $isoM($from)\n      or ($isoM($to) = $isoM($from) and $isoD($to) < $isoD($from));\n    $beforeAnniversary ? $y - 1 : $y\n  ) };\n\n  /* Whole completed months between two ISO dates, same convention. */\n  $monthsBetween := function($from, $to) { (\n    $m := ($isoY($to) - $isoY($from)) * 12 + ($isoM($to) - $isoM($from));\n    $isoD($to) < $isoD($from) ? $m - 1 : $m\n  ) };\n\n  /* Inclusive count of days between two ISO dates — both endpoints counted, because a leave year\n     runs from its first day to its last and an employee present on both is present for both.\n     Pro-rata accrual is then $proRataDays(a, b) / $proRataDays(yearStart, yearEnd). */\n  $proRataDays := function($from, $to) {\n    ($toMillis($to) - $toMillis($from)) / 86400000 + 1\n  };\n\n  /* Progressive charge across bands. `$bands` is ordered lowest-first, each {\"upTo\": n, \"rate\": r};\n     the final band's `upTo` is omitted or null to mean \"no ceiling\". Each band's rate applies ONLY\n     to the slice of the amount inside it — the single most common error in a hand-written bracket\n     walk is applying the top rate to the whole amount. Returns 0 for a non-positive amount. */\n  $bandedCharge := function($amount, $bands) { (\n    $a := $n($amount);\n    $a <= 0 ? 0 : $reduce($bands, function($acc, $band) { (\n      $ceiling := $exists($band.upTo) and $band.upTo != null ? $band.upTo : $a;\n      $top := $ceiling < $a ? $ceiling : $a;\n      $slice := $top - $acc.floor;\n      {\n        \"floor\": $top > $acc.floor ? $top : $acc.floor,\n        \"charge\": $acc.charge + ($slice > 0 ? $slice * $n($band.rate) : 0)\n      }\n    ) }, {\"floor\": 0, \"charge\": 0}).charge\n  ) };\n\n  /* Clamp into [floor, cap]. Either bound may be omitted (null) to leave that side open — a benefit\n     with a cap and no floor is as common as one with both. */\n  $clampFloorCap := function($value, $floor, $cap) { (\n    $v := $n($value);\n    $withFloor := $exists($floor) and $floor != null and $v < $floor ? $floor : $v;\n    $exists($cap) and $cap != null and $withFloor > $cap ? $cap : $withFloor\n  ) };\n\n  /* Level annuity payment for a principal over `$months` at `$annualRatePct` nominal, compounded\n     monthly. Falls back to straight-line division at a zero rate, where the standard formula\n     divides by zero. */\n  $annuityPayment := function($principal, $annualRatePct, $months) { (\n    $p := $n($principal);\n    $m := $n($months);\n    $i := $n($annualRatePct) / 1200;\n    $m <= 0 ? 0 : ($i = 0 ? $p / $m : $p * $i * $power(1 + $i, $m) / ($power(1 + $i, $m) - 1))\n  ) };\n\n  /* Amortisation schedule: one row per month until the balance clears or `$months` is reached.\n     Returns {\"payment\", \"months\", \"totalInterest\", \"schedule\": [{month, interest, principal,\n     balance}]}. `$extra` is an optional monthly overpayment.\n\n     A real month-by-month fold rather than a closed form, because an overpayment changes every\n     later row — the same reason debt-payoff simulates. Bounded by `$months`, so it always\n     terminates. */\n  $amortize := function($principal, $annualRatePct, $months, $extra) { (\n    $i := $n($annualRatePct) / 1200;\n    $pay := $annuityPayment($principal, $annualRatePct, $months) + $n($extra);\n    $r := $reduce([1..$n($months)], function($acc, $month) {\n      $acc.balance <= 0 ? $acc : (\n        /* The running balance is kept UNROUNDED and only the emitted row is rounded. Rounding the\n           balance each month instead accumulates drift: at 200,000 over 360 months it left 2.83\n           still owing in the final row, which would break the \"final balance is zero\" invariant\n           (§7.3) and look to a reader like the schedule does not pay the loan off. Lenders compute\n           on the exact balance and adjust the last payment, which is what this does. */\n        $interest := $acc.balance * $i;\n        $due := $acc.balance + $interest < $pay ? $acc.balance + $interest : $pay;\n        $principalPart := $due - $interest;\n        $balance := $acc.balance - $principalPart;\n        {\n          \"balance\": $balance,\n          \"totalInterest\": $acc.totalInterest + $interest,\n          \"schedule\": $append($acc.schedule, [{\n            \"month\": $month,\n            \"interest\": $round($interest, 2),\n            \"principal\": $round($principalPart, 2),\n            \"balance\": $round($balance, 2)\n          }])\n        }\n      )\n    }, {\"balance\": $n($principal), \"totalInterest\": 0, \"schedule\": []});\n    {\n      \"payment\": $round($pay, 2),\n      \"months\": $count($r.schedule),\n      \"totalInterest\": $round($r.totalInterest, 2),\n      \"schedule\": [$r.schedule]\n    }\n  ) };\n\n  [\"n\", \"isoY\", \"isoM\", \"isoD\", \"yearsBetween\", \"monthsBetween\", \"proRataDays\",\n   \"bandedCharge\", \"clampFloorCap\", \"annuityPayment\", \"amortize\"]\n)\n"
        }
      ]
    },
    "defaultValues": [
      {
        "path": "$",
        "expr": "{ 'serviceYears': 5, 'employmentPercent': 100, 'daysTaken': 0 }"
      }
    ],
    "derivations": [
      {
        "path": "$.fullTimeDays",
        "expr": "($n(serviceYears) >= $const.serviceThresholdYears ? $const.daysFrom10Years : $const.daysUnder10Years)"
      },
      {
        "path": "$.proportionalDays",
        "expr": "fullTimeDays * $n(employmentPercent) / 100"
      },
      {
        "path": "$.daysEntitled",
        "expr": "$clampFloorCap($ceil(proportionalDays), 0, fullTimeDays)"
      },
      {
        "path": "$.daysRemaining",
        "expr": "($r := daysEntitled - $n(daysTaken); $r < 0 ? 0 : $round($r, 1))"
      }
    ],
    "constraints": [],
    "viewDefinition": {
      "renderer": "builtin",
      "defaultView": "main",
      "views": [
        {
          "id": "main",
          "label": "Urlop wypoczynkowy",
          "layout": "vertical",
          "components": [
            {
              "id": "note",
              "type": "staticText",
              "text": "Art. 154 § 1: “20 dni – jeżeli pracownik jest zatrudniony krócej niż 10 lat; 26 dni – jeżeli pracownik jest zatrudniony co najmniej 10 lat.” A step, not a slide: there is nothing between 20 and 26, and the threshold is ten years of employment rather than ten years with this employer — art. 154¹ § 1 counts previous employment “bez względu na przerwy w zatrudnieniu oraz sposób ustania stosunku pracy”, and study periods count too under art. 155."
            },
            {
              "id": "inputs",
              "type": "fieldSet",
              "label": "Twoje dane",
              "components": [
                {
                  "id": "serviceYears",
                  "type": "numericField",
                  "label": "Years of employment (total, any employer)",
                  "bind": "$.serviceYears",
                  "helperText": "Art. 154¹ § 1 counts previous employment regardless of breaks, and art. 155 adds a period for completed education."
                },
                {
                  "id": "employmentPercent",
                  "type": "numericField",
                  "label": "Working time as a % of full time",
                  "bind": "$.employmentPercent",
                  "helperText": "Art. 154 § 2 pro-rates by wymiar czasu pracy — 100 for full-time, 75 for 3/4 etatu, 50 for half."
                },
                {
                  "id": "daysTaken",
                  "type": "numericField",
                  "label": "Days already taken",
                  "bind": "$.daysTaken"
                }
              ]
            },
            {
              "id": "sep",
              "type": "separatorLine"
            },
            {
              "id": "entitledTile",
              "type": "statTile",
              "label": "Days entitled",
              "value": "$.daysEntitled"
            },
            {
              "id": "remainingTile",
              "type": "statTile",
              "label": "Days remaining",
              "value": "$.daysRemaining"
            },
            {
              "id": "breakdown",
              "type": "keyValueList",
              "label": "How that is worked out",
              "items": [
                {
                  "label": "Full-time figure, art. 154 § 1",
                  "value": "$.fullTimeDays"
                },
                {
                  "label": "Before the round-up, art. 154 § 2",
                  "value": "$.proportionalDays"
                }
              ]
            },
            {
              "id": "assumptions",
              "type": "staticText",
              "text": "Poland is the second country in this family whose statute sets its own rounding, and it rounds UP: art. 154 § 2, “niepełny dzień urlopu zaokrągla się w górę do pełnego dnia.” So 3/4 etatu on the 26-day band is 19.5 days, which is 20. Art. 154 § 3 then caps the result at § 1's figure, which is why this page cannot produce more than 26 however the inputs are set. The days are the employee's own working days — art. 154² § 1 grants leave “w dni, które są dla pracownika dniami pracy” — so no six-day conversion applies here. The first calendar year of a first job accrues monthly under art. 153 § 1, which this page does not model."
            },
            {
              "id": "sources",
              "type": "sourceList",
              "label": "Źródła",
              "layers": 1,
              "items": [
                {
                  "label": "Kodeks pracy, art. 154 — tekst jednolity, Dz. U. 2026 poz. 1245 (Sejm ELI; stan prawny na 27 sierpnia 2026 r.): the two bands, the part-time proportion with its round-up, and § 3's ceiling",
                  "url": "https://api.sejm.gov.pl/eli/acts/DU/2026/1245/text.pdf",
                  "date": "2026-10-11",
                  "covers": [
                    "daysUnder10Years",
                    "daysFrom10Years",
                    "serviceThresholdYears"
                  ]
                }
              ]
            }
          ]
        }
      ]
    },
    "tests": [
      {
        "description": "L1 under ten years' employment, full time: 20 days",
        "given": {
          "$.serviceYears": 5,
          "$.employmentPercent": 100,
          "$.daysTaken": 0
        },
        "expect": {
          "$.fullTimeDays": 20,
          "$.daysEntitled": 20
        }
      },
      {
        "description": "L2 at ten years it steps to 26 — there is nothing in between",
        "given": {
          "$.serviceYears": 10,
          "$.employmentPercent": 100,
          "$.daysTaken": 0
        },
        "expect": {
          "$.fullTimeDays": 26,
          "$.daysEntitled": 26
        }
      },
      {
        "description": "L3 nine years is still the lower band: “co najmniej 10 lat” is at least ten",
        "given": {
          "$.serviceYears": 9,
          "$.employmentPercent": 100,
          "$.daysTaken": 0
        },
        "expect": {
          "$.fullTimeDays": 20,
          "$.daysEntitled": 20
        }
      },
      {
        "description": "L4 3/4 etatu on the 26-day band is 19.5, which § 2 rounds UP to 20",
        "given": {
          "$.serviceYears": 12,
          "$.employmentPercent": 75,
          "$.daysTaken": 0
        },
        "expect": {
          "$.proportionalDays": 19.5,
          "$.daysEntitled": 20
        }
      },
      {
        "description": "L5 half time on the 20-day band is exactly 10, so the round-up changes nothing",
        "given": {
          "$.serviceYears": 3,
          "$.employmentPercent": 50,
          "$.daysTaken": 0
        },
        "expect": {
          "$.proportionalDays": 10,
          "$.daysEntitled": 10
        }
      },
      {
        "description": "L6 a third of full time on the lower band: 6.667 rounds up to 7",
        "given": {
          "$.serviceYears": 3,
          "$.employmentPercent": 33,
          "$.daysTaken": 0
        },
        "expect": {
          "$.daysEntitled": 7
        }
      },
      {
        "description": "L7 § 3's ceiling: the pro-rated figure can never exceed § 1's",
        "given": {
          "$.serviceYears": 30,
          "$.employmentPercent": 100,
          "$.daysTaken": 0
        },
        "expect": {
          "$.daysEntitled": 26
        }
      },
      {
        "description": "L8 days already taken come off the remainder, and it never goes negative",
        "given": {
          "$.serviceYears": 12,
          "$.employmentPercent": 100,
          "$.daysTaken": 30
        },
        "expect": {
          "$.daysRemaining": 0
        }
      },
      {
        "description": "L9 days taken below the entitlement leave the balance",
        "given": {
          "$.serviceYears": 12,
          "$.employmentPercent": 100,
          "$.daysTaken": 6
        },
        "expect": {
          "$.daysEntitled": 26,
          "$.daysRemaining": 20
        }
      }
    ]
  }
}