Parental Leave Returners in Japan: Setting Rating and Role

Japanese law tells an employer what it may not do to someone returning from parental leave. It says almost nothing about how to rate the months they were away or how those months count toward promotion. Those two gaps are where a returner's career is decided, and they are filled by the company's own rules, or by nobody.

The question HR dreads in a return meeting is simple: "How will my rating work for the period I was off?" In many companies, the honest answer is that nobody wrote it down.

What does the law forbid?

Article 10 of Japan's Child Care and Family Care Leave Act (育児・介護休業法) bans dismissal or any other disadvantageous treatment because an employee requested or took childcare leave. The Ministry of Health, Labour and Welfare (MHLW) lists examples: demotion, an unfavorable rating in promotion reviews, a disadvantageous transfer, a pay cut, or calculating bonuses unfavorably (MHLW work-life balance Q&A).

On where people return to, the ministry's guideline asks employers to "give consideration" to returning them, as a rule, to their original job or an equivalent one. MHLW material describes equivalent as no lower rank, the same duties and the same workplace (MHLW guidance material).

Employers tend to misread the word consideration in both directions. It is not a duty to hold the exact seat open. A normal reorganization that moves someone can be lawful. But if you move a returner, you need a reason and a paper trail that won't read as "because they took leave."

Short hours follow the same logic. Under the guideline, reducing a bonus in proportion to the hours actually not worked can be acceptable. Treating someone as if they worked less than that is disadvantageous treatment. So is keeping someone on short hours longer than they want, against their will.

What the 2025 amendments added to the employer's process

An amendment passed in May 2024 took effect in two steps, April and October 2025 (MHLW overview). As of November 2026, these are the parts that touch roles and ratings.

From April 2025, the right to be exempted from overtime extends to parents of children up to elementary school entry, not just under 3. Companies with more than 300 regular employees, down from 1,000, must publish their male parental leave rate.

From October 2025, for parents of children aged 3 up to school entry, employers must offer at least two of five options: shifted start times, telework of 10 or more days a month, short hours, 10 or more days a year of extra leave, or childcare support such as babysitter subsidies. The employee picks one. Employers must also ask each employee individually about preferences on hours, workload and similar conditions, when a pregnancy or birth is reported and again before the child turns 3 (BUSINESS LAWYERS summary, in Japanese). They don't have to grant everything, but they should explain why not, and they can't penalize anyone for what they asked.

That interview is more useful than it looks. The company now has to hold at least one conversation anyway. Put ratings and promotion on its agenda. Returners rarely raise those topics themselves.

More people take leave. Fewer stay on the track.

MHLW's Basic Survey on Equal Employment for fiscal 2025, published in July 2026, put the male take-up rate at 50.9%, the first time above half. The year before it was 40.5%. For women it was 88.3% (MHLW survey page).

What happens afterwards shows up elsewhere. In the Cabinet Office's White Paper on Gender Equality 2026, women's employment rate in 2025 stays around 80% from 87.4% at ages 25 to 29 through the early 50s. Their share in regular, full-status jobs peaks at 62.8% at 25 to 29, then drops: 54.2% at 30 to 34, 43.6% at 35 to 39, 39.5% at 40 to 44, 34.0% at 50 to 54, and 29.2% at 55 to 59. Men stay above 70% through their 30s and 40s. Japan calls this the L-shaped curve, which I covered in Japan's M-curve is gone, the L-curve isn't.

The statistics can't say where the drop comes from. My reading is that the leave itself does little of it. The years after do more: short hours, a quieter role, one skipped promotion cycle and then another. A slower lane that someone chose is fine. The cost to the employer is the person who never chose it, gets parked anyway, and turns out years later to be the senior hire you didn't develop.

The rules a company should write before anyone returns

Put the legal lines next to the decisions a company has to make, and the gaps are easy to see.

For a review period the leave cut through, the usual choices are to mark it not rated, to rate the months worked, or to hold the last rating. If promotion requires a number of recent ratings or years in grade, decide how leave months count. MHLW material lists, as an example of unfavorable treatment, a rating system that keeps someone out of promotion review for a period longer than the leave itself, so the counting rule has to stay inside that line. Within it, none of these choices is unlawful in itself as far as I can tell. The problem is having no rule. Then each manager improvises, two people in the same team get different treatment, and nobody can explain why.

Foreign companies in Japan have one extra trap here. Managers often assume the global policy covers it. Often the Japan entity has its own rules, or none, and a policy written for another country may not fit Japanese leave law.

How the pay system itself should be built is a separate topic, covered in Three-track pay: set grade, allowance and bonus separately. Before writing returner rules, check which of grade, allowance and bonus your rating score actually feeds. That tells you how far the short-hours math will travel.

What the manager decides, no rule can fix

Even with good rules, the direct manager sets the rating and hands out the work. While someone is away, the manager may change, the org chart moves, fewer people remember what they did. Their ability is the same and the assignments are different.

Men hit this too. A common story is a man who takes a few months off and comes back to find his accounts were handed over for good. Taking the leave already felt like a statement, so he finds it harder to bring up his rating.

What the company can do is set up a short meeting about a month before the return, with the manager, the employee and one or two close colleagues. It changes where people land more than most HR teams expect. If the manager changed during the leave, the returner is starting the same first 90 days I described in when your boss changes.

Old role or new one? The old role restarts faster but invites the comparison "same person, fewer hours." A new role removes that comparison, which can make the rating more honest. Either can work. Make the choice before the first day back, with the employee in the room. People can live with a new role. What they remember is finding out from the org chart.