Is per-lesson pay for cram-school and prep-school teachers a risk? Managing working time for out-of-class work (prep, grading, parent calls)

In short: Per-lesson pay for cram schools and prep schools tends to pay only for class time, yet preparation, grading, parent response and training, if under the employer's direction and control, are also working time subject to wages and premiums. Folding overtime into per-lesson pay requires a clear split and settlement of the difference, and even "independent contractors" can be judged workers by actual conditions.

System and primary-source check: October 12, 2026. This guide is for operators and head teachers at cram schools and prep schools that pay teachers by the lesson. It organizes the working-time character of out-of-class work through the Labor Standards Act, case law and administrative standards. It does not deal with individual unpaid-wage claims or the final finding of worker status; it sets out the framework and the design.

What tends to go unpaid when pay is only per lesson?

Per-lesson pay is a unit price per lesson. It rewards the class itself but has a weak spot: work that arises before and after the class, or on non-teaching days, easily falls out of the wage calculation.

Work	Under per-lesson pay only	Typical problem
Lesson prep and materials	Tends to be excluded	Below minimum wage / unpaid
Grading and marking tests	Tends to be excluded	Same
Parent meetings and phone calls	Tends to be excluded	Unpaid overtime premium
Training, meetings, handovers	Tends to be excluded	Same

Wages must be paid in full (Labor Standards Act, Article 24), and work beyond statutory hours requires a premium (Article 37). If this work is treated as unpaid, it surfaces as pay falling below the minimum wage when divided across the month's total hours, or as an unpaid overtime premium.

Do lesson prep, grading and parent response count as working time?

The MHLW guideline established on 20 January 2017 describes working time as time under the employer’s direction and control, determined objectively from actual circumstances rather than contract or work-rule wording alone (retrieved pages 1–2; accessed 12 October 2026). It includes instructed preparation and clearing-up, standby without guaranteed freedom to leave the work, and mandatory training or instructed learning. The Supreme Court judgment cited in the original draft was not obtained and is not treated as verified case-law evidence.

So preparation and grading that the school directs or requires, reporting in a set format, and mandatory training and meetings can be working time even at home. Conversely, voluntary self-study that is not required is not immediately working time. The line is drawn by whether there is an instruction, whether a deliverable is required, and the constraint on time and place. The Ministry of Health, Labour and Welfare's Guidelines on measures employers should take to appropriately grasp working hours (established January 20, 2017; accessed October 12, 2026) set out the employer's duty to confirm and record start and end times.

What happens if a fixed overtime allowance folded into per-lesson pay is not enough?

Folding a set amount of overtime pay into per-lesson pay (a fixed overtime allowance) is possible, but to be valid it must meet conditions: the part that is ordinary working-time wages and the part that is the premium must be distinguishable, and any overtime beyond the fixed amount must be settled by paying the difference.

A scheme that merely states "per-lesson pay includes overtime," without showing how many overtime hours it covers and without settling excess hours, may not be recognized as a fixed overtime allowance, and a separate premium may be demanded. For the requirements and difference settlement, see the conditions for a lawful fixed overtime allowance.

Can teachers be made "independent contractors"?

Even if a contract is labeled "independent contractor," if the actual way of working is that of a worker, the Labor Standards Act and Minimum Wage Act (最低賃金法) apply. Whether someone is a worker is judged overall around the "subordination" the 1985 Labor Standards Act Study Group report describes: freedom to decline requests, constraint on time and place, being subject to direction and supervision, whether pay corresponds to the provision of labor, and whether a substitute can be sent.

Focus	More likely judged a worker
Accepting or declining work	Hard to decline lesson assignments
Direction and supervision	Teaching method, timetable and reporting are specified
Time and place constraint	Working at the school at set times
Substitutability	No one else can cover the lesson
Nature of pay	Corresponds to providing labor, not time or output

Even if labeled an independent contractor, if these point to a worker, issues of minimum wage, premium wages and labor insurance arise. Even when outsourcing properly as a contract, there are rules such as disclosing transaction terms (see what the ordering side should check under the Freelance Act). The final finding of whether someone is a worker is made by the Labor Standards Inspection Office or the courts.

How do you set up pay rules and records to prevent trouble?

Preparing in this order lowers the risk of unpaid wages.

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1. Inventory teachers' work and sort which of class, prep, grading, meetings, training and conferences is labor under direction and control.
2. Calculate whether the per-lesson unit price falls below the minimum wage once out-of-class work is included in total hours.
3. If using a fixed overtime allowance, state it in the pay rules so the ordinary wage and the premium part are distinguishable, and provide for settling the difference on excess hours.
4. Decide a method for recording start and end times and out-of-class hours, and grasp them in line with the Guidelines.
5. For teachers treated as independent contractors, check that the actual way of working is not that of a worker, and switch to a labor contract if it is.

For preparing pay rules and work rules, also see from how many employees are work rules mandatory.

What can 四葉社会保険労務士事務所 help with?

Our office provides consultation on pay rules and fixed overtime allowances that account for per-lesson pay and out-of-class work, methods for recording working time, and preparing work rules. Consultations are free. See our fee schedule and FAQ.

Individual disputes such as unpaid-wage claims are handled by an attorney, and the final finding of whether a teacher is an independent contractor or a worker is made by the Labor Standards Inspection Office. Each external professional is an independent business that you contract with separately, and you are invoiced by and pay each one directly. We do not handle referral fees or kickbacks. Specific design and judgment are carried out by a qualified professional after an interview.

Frequently asked questions

Q. If I write "overtime included" into per-lesson pay, do I not have to pay a premium?
A. That is not enough. For a fixed overtime allowance to be valid, the ordinary working-time wage and the premium part must be distinguishable, and overtime beyond the fixed amount must be settled by paying the difference. A scheme where the hours covered are unclear and excess is not settled is not recognized, and a separate premium may be demanded.

Q. Is lesson prep or grading at home working time?
A. Preparation and grading that the school directs or requires, so that it is under the employer's direction and control, can be working time even at home. Voluntary self-study that is not required is not immediately working time. It is judged by instruction, whether a deliverable is required, and the constraint on time and place.

Q. If I make teachers independent contractors, is labor law irrelevant?
A. It is judged by the actual way of working, not the contract label. If it is hard to decline requests, time and place are constrained, direction and supervision apply, and no substitute can be sent, the person may be judged a worker, and minimum wage, premium wages and labor insurance apply. The final finding is made by the Labor Standards Inspection Office or the courts.

Q. Can the minimum wage still be an issue with per-lesson pay?
A. Yes. The hourly figure obtained by dividing per-lesson pay across total hours, including out-of-class work, must not fall below the regional minimum wage. Teachers with more prep and grading are more likely to fall below it, so calculate using total hours.

Sources for this article

Updated and additional materials retrieved: 12 October 2026. Checks are limited to the MHLW statute text and working-time guideline actually obtained. Complete reconciliation with e-Gov consolidated statutes, final amendment numbers and commencement histories, related judgment and Labor Standards Act Study Group report texts, and individual system, worker-status and fixed-overtime validity assessments remain unverified. Retrieval failure does not prove an error; publication is held pending qualified review.

• Labor Standards Act, Article 32 (working hours), Article 34 (breaks), Article 37 (premium wages) and Article 24 (full payment of wages) (e-Gov law search).
• Mitsubishi Heavy Industries Nagasaki Shipyard judgment cited in the original draft (9 March 2000): judgment text not obtained; holding not reconciled (unverified). The working-time explanation is limited to the retrieved MHLW guideline.
• Judging worker status: Labor Standards Act Study Group report (December 19, 1985). An overall judgment centered on subordination — freedom to decline, direction and supervision, constraint, pay corresponding to labor, and substitutability. Report text not obtained or reconciled (unverified).
• MHLW Guidelines on measures employers should take to appropriately grasp working hours (established January 20, 2017; accessed October 12, 2026): the duty to confirm and record start and end times.
• Shakai Hoken Roumushi Act, Article 2: basis for consultation and guidance services. Reconciling every current consolidated provision and final amendment date, and the conclusion on worker status in an individual case, are outside this article's scope.
• 厚生労働省・労働基準法の法令本文（2026-10-12取得、第119条の拘禁刑等を確認）

This article provides general information. The design of individual contracts and wages is judged by a qualified professional after an interview, using current primary sources and the actual circumstances of the workplace. Where needed, we inquire with the competent Labor Standards Inspection Office or Labour Bureau. Author: 浦松丈二 (Shakai Hoken Roumushi, Gyoseishoshi and licensed real estate transaction specialist).