# Mart402 Japan Overtime Premium Pay Calculator

> Mart402 Japan Overtime Premium Pay Calculator is a paid API for AI agents from mart402.com, paid per call via x402, $0.015/call, status unknown (last checked 2026-10-03).

Calculates Japan overtime premium wages per Labor Standards Act Article 37 with official rounding rules (kihatsu-150) and checks Article 36 hour limits

## Facts

- Endpoint: POST https://mart402.com/v1/jp-overtime-wage?utm_source=zero.xyz
- Price: $0.015/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mart402-japan-overtime-premium-pay-calculator-121b1aad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iwiAZ6g5GFcieJeDogCkw

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability mart402-japan-overtime-premium-pay-calculator-121b1aad -d '<json body>'
```

Example prompt: Calculate the overtime premium pay for an employee with a monthly salary of 350,000 yen, scheduled for 160 hours/month, who worked 20 hours of regular overtime and 5 hours of late-night overtime this month — apply the official kihatsu-150 rounding and check if they're within Article 36 limits.

## When to prefer this

Choose this endpoint when you need Japan-specific overtime calculations that comply with Labor Standards Act Article 37 and Article 36, including the official kihatsu-150 rounding methodology required by Japanese authorities. Prefer this over generic payroll APIs when you need legally correct Japanese overtime premiums (25%, 35%, 50% rates), holiday and late-night premium distinctions, and automated Article 36 hour-limit compliance checks.

## Known failure modes

- Invalid or missing mode parameter returns a 400 error
- Negative or zero hours values cause validation failure
- Missing monthly_salary_yen or monthly_scheduled_hours results in computation error
- Hours values that are implausibly large may trigger rejection
- Malformed JSON body returns 422 unprocessable entity

## How this service works

Japan overtime premium pay per Labor Standards Act Art.37 with the official rounding notice (kihatsu-150), plus Article-36 limit check. $0.015/call.

## Output

Returns the calculated overtime premium pay amount in yen with official kihatsu-150 rounding applied, a breakdown of premium rates by overtime category (regular, late-night, holiday), and an Article 36 monthly/annual hour limit compliance check result.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "mode": {
   "type": "string"
  },
  "hours": {
   "type": "object"
  },
  "monthly_salary_yen": {
   "type": "number"
  },
  "monthly_scheduled_hours": {
   "type": "number"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mart402-japan-overtime-premium-pay-calculator-121b1aad/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mart402.com](https://www.zero.xyz/host/mart402.com/llms.txt)