# Netherlands Working Day

> Checks a date against the Saturday-Sunday weekend baseline and exact 2026-2027 authority events.

- Calculator id: `netherlands-public-working-day` · Category: Everyday Life (`everyday`) · Tool name: `check_nl_working_day`
- Canonical page: https://tttkmbb.com/everyday/netherlands-public-working-day · This document: https://tttkmbb.com/everyday/netherlands-public-working-day.md · JSON definition: https://tttkmbb.com/everyday/netherlands-public-working-day.json

## Purpose

Checks a date against the Saturday-Sunday weekend baseline and exact 2026-2027 authority events.

**Use when:** You need a deterministic Netherlands Netherlands official public holidays for 2026-2027; employee day-off status remains CAO/contract dependent result.

**Do not use when:** A public holiday is not automatically a paid day off for every Dutch employee. CAO, employment contract, sector, employer, school, bank and municipal schedules are not inferred; Liberation Day arrangements may be five-year/CAO dependent.

## Example user requests

- Netherlands: King's Day.
- Netherlands: Ordinary weekday.


## Input

| Parameter | Type | Unit | Required | Description |
| --- | --- | --- | --- | --- |
| `date` | date |  | required | Gregorian date in Netherlands coverage. |

## Output

| Field | Type | Unit | Description |
| --- | --- | --- | --- |
| `territory` | string |  | NL (Netherlands). |
| `territory_name` | string |  | Netherlands |
| `weekday` | string |  | Gregorian weekday. |
| `is_working_day` | boolean |  | Monday-Friday with no event in this pinned authority scope. |
| `day_type` | string |  | Deterministic classification: official_weekend, regular_workday, or the first published authority event kind. |
| `holiday_names` | string_list |  | Events applying on the date. |
| `holiday_kinds` | string_list |  | Authority event classifications. |
| `holiday_details` | list |  | Structured event details, including partial-day notes where published. |
| `calendar_scope` | string |  | Netherlands official public holidays for 2026-2027; employee day-off status remains CAO/contract dependent |
| `holiday_policy` | string |  | Official public-holiday dates are included; no universal employer closure is inferred because Dutch law leaves the day-off entitlement to the CAO or employment contract. |
| `substitute_day_policy` | string |  | No substitute-day closure is inferred; sector, CAO, employer and alternative-religious-holiday arrangements require separate evidence. |
| `calendar_profile` | string |  | netherlands-public-holidays |
| `dataset_version` | string |  | nl-public-holidays-2026-2027.1 |
| `sources` | list |  | Authority and legislation sources. |

## Formula

`is_working_day = not an official Saturday/Sunday weekend date and no exact authority event`

Apply the pinned authority event table over the declared weekday baseline; do not infer uncovered employer or regional schedules.

## Data Sources

- Government of the Netherlands – official public holidays 2026 and 2027 — https://www.government.nl/faq/work/public-holidays-in-the-netherlands (government_calendar_reference)
- Rijksoverheid – officiële feestdagen — https://www.rijksoverheid.nl/vraag-en-antwoord/arbeidsovereenkomst-en-cao/officiele-feestdagen (government_guidance)
- Business.gov.nl – public holidays and holiday entitlement — https://business.gov.nl/regulations/holiday-entitlement/ (government_business_guidance)

Data freshness: `static`. Refresh after the Netherlands authority publishes a new schedule.

## API

- `GET https://tttkmbb.com/api/v1/calculate/netherlands-public-working-day?date=…`
- `POST https://tttkmbb.com/api/v1/calculate/netherlands-public-working-day` with JSON body `{"inputs": {…}}`
- Response: unified envelope (`success`, `request`, `result.values`, `result.units`, `sources`, `freshness`, `timestamp`, `next_actions`, `links`); see https://tttkmbb.com/docs/response-format.md
- Schema: https://tttkmbb.com/api/v1/calculators/netherlands-public-working-day · OpenAPI operationId `check_nl_working_day` in https://tttkmbb.com/openapi.json
- Authentication: none. Rate limit: fair use, see https://tttkmbb.com/docs/rate-limits.md.

## MCP

- Server: `https://tttkmbb.com/mcp` (Streamable HTTP, JSON-RPC 2.0, no auth)
- Tool:  `run_calculator` with `{"calculator_id": "netherlands-public-working-day", "inputs": {…}}`

## Example

- King's Day: inputs `{"date":"2026-04-27"}` → `{"is_working_day":false,"day_type":"public_holiday"}`
- Ordinary weekday: inputs `{"date":"2026-04-28"}` → `{"is_working_day":true,"day_type":"regular_workday"}`

```
GET https://tttkmbb.com/api/v1/calculate/netherlands-public-working-day?date=2026-04-27
```

## Limitations

A public holiday is not automatically a paid day off for every Dutch employee. CAO, employment contract, sector, employer, school, bank and municipal schedules are not inferred; Liberation Day arrangements may be five-year/CAO dependent. Apply the pinned authority event table over the declared weekday baseline; do not infer uncovered employer or regional schedules. All values are computed from the formula above; no measurement or live data is involved.

## FAQ

**Does this prove an employee is legally off work?**

No. It identifies an official public holiday. Check the applicable CAO or employment contract for the employee day-off rule.

## Related

- [Add Netherlands Working Days](https://tttkmbb.com/everyday/netherlands-public-add-working-days.md) — Offset through the same authority package.