Can a mandatory label make outcomes worse? The Korean grade label

The Korean grade label

Labelling policy often treats a mark as able to help or to do nothing. The downside is assumed to be zero. South Korea’s recyclability grade label is a test of that assumption. It is a mandatory, government-designed mark — an accurate statement about recyclability, printed by law. The located evidence is one survey of 1,013 respondents, plus press coverage of that survey. A minority of those respondents say they respond by putting recyclable packaging in general waste. The mechanism is an accurate label read as a disposal instruction it was not written to convey. It is also the only topic in this theme for which the located evidence was produced years after the mandate took effect.

The system

Korea’s Packaging Recyclability Grade and Labelling System took effect on 25 December 2019, with amendments from 28 February 2022 (Kim & Chang, 2022). Packaging is assessed against Ministry of Environment standards and classed into four grades: best, good, normal, and difficult (최우수 / 우수 / 보통 / 어려움). Producers submit self-assessments to the Korea Environment Corporation. Packaging graded “difficult to recycle” must display “재활용 어려움.” Administrative fines of up to KRW 3 million attach to fraudulent or non-compliant evaluation and labelling (Kim & Chang, 2022). The grade also feeds EPR fees: lower grades attract higher charges. The system is both a consumer-facing mark and a producer-facing fee.

Two design features distinguish it from ordinary disposal labels. It is evaluative: it states how well the pack performs against a recyclability standard, rather than telling the consumer where to put it. And only the failing grade must be displayed, so the mark consumers see is, by construction, the negative assessment. The stated logic is producer-facing — discourage poor design through disclosure and fees — with the consumer-facing display added as transparency. The effect of that display on consumer behaviour was not tested before the mandate, on the record located for this article.

The survey evidence

In September 2025 the Seoul branch of the Korean Federation for Environmental Movements (Seoul KFEM) surveyed 1,013 adults aged 19–69 nationwide, through DoitSurvey, on aseptic beverage cartons (멸균팩) carrying the “difficult to recycle” mark (Eroun, 2025; Hankook Ilbo, 2025).

Comprehension: 39 per cent read “difficult to recycle” as meaning the carton is not recyclable; 46 per cent understood it correctly; 15 per cent were unsure. Disposal: 47.5 per cent said they put such cartons in general paper recycling (incorrect for aseptic cartons, which need dedicated collection); 25.2 per cent said they discarded them in pay-as-you-throw general-waste bags; only 24.1 per cent reported using the dedicated carton collection. 85.7 per cent said clearer guidance is needed. Coverage cites an aseptic-carton recycling rate of around 2 per cent as of 2023 (Eroun, 2025).

Evidential basis: weak-to-moderate. One stated-behaviour online survey by an advocacy organisation, one packaging category, one jurisdiction, no observed-disposal validation, no replication found. The “quarter of consumers” figure in circulation is properly: a quarter of surveyed consumers report discarding “difficult”-labelled aseptic cartons as general waste. The 39 per cent misreading is the more generalisable result, because it measures how the wording is read. The disposal figures are the behavioural shadow of that misreading.

Hong Soo-yeol, director of Korea’s Resource Recirculation Society and Economy Institute, argued in a March 2024 column that “재활용 어려움” invites general-waste disposal, and proposed “low recyclability” instead, while objecting to a blanket “difficult” grade for aseptic cartons that have dedicated routes (Hong, 2024). That was a hypothesis without accompanying data. It is consistent with the later survey.

No Ministry of Environment evaluation, OECD review or peer-reviewed outcome study of the grade label’s behavioural effects was found. A mandatory national instrument in force since 2019 has, as its only located public behavioural evaluation, one NGO survey reported in the press.

How an accurate grade becomes the wrong action

Consumers tend to read every mark as a disposal instruction, because disposal is the decision they hold the pack for. The grade states “this was hard to design for recycling.” Many consumers read “don’t recycle this.” The compression in the comprehension article operates here in reverse: where arrows read as “recyclable” whatever they denote, a difficulty grade reads as “not recyclable” whatever it means. In the survey, 39 per cent read prohibition, 46 per cent read qualified permission, 15 per cent were unsure.

Allison et al. found that a plain “do not recycle” instruction improved correct disposal by 11 percentage points. Taken together, the two results separate worded instructions, which improved sorting in experiment, from worded evaluations, which the Korean survey associates with misreading. “Do not recycle” is an instruction, correct by definition. “Difficult to recycle” is an evaluation from which a disposal action must be inferred.

Related instruments

Negative and qualified labels are spreading: “Not Yet Recyclable” tiers, “Do Not Recycle” instructions, incoming EU sorting pictograms, France’s Triman with its sorting companion. Each depends on consumers parsing a negative or conditional message as an instruction rather than an assessment. The Korean survey is the located evidence that the parse can fail at scale. Voluntary scheme grades that are not mandatory on the pack, and fee modulation that never appears on the pack, do not share the same consumer-facing risk. The Korean problem is the printed evaluation, not the existence of a grade behind the scenes.

Limits

The case does not show that grade labels cannot work. The producer-facing half — grades driving fees and design pressure — is unmeasured here. It does not show that 25 per cent of Korean households dump cartons; it shows what 1,013 survey respondents said they do with one format. It does not licence a general claim that mandatory labels backfire. It shows that a mandatory evaluative mark can be read as a prohibition, and that a share of respondents report acting on that reading. That is enough to drop the assumption that the downside of a mandatory label is zero.

References

Eroun (2025) "재활용 어려움" 표시 멸균팩, 시민 인식 조사 (Seoul KFEM/DoitSurvey findings), September–December coverage. Available at: Open source (Accessed: 18 August 2026).

Hankook Ilbo (2025) coverage of the Seoul KFEM aseptic-carton survey, 29 December. Available at: Open source (Accessed: 18 August 2026).

Hong, S. (2024) column on the "재활용 어려움" label's signal, Hankook Ilbo, 11 March. Available at: Open source (Accessed: 18 August 2026).

Kim & Chang (2022) Amendment to the Ministry of Environment's standards for evaluating recyclability of packaging materials. Available at: Open source (Accessed: 18 August 2026).

Kookmin Ilbo (2022) explainer on the four-grade system, March. Available at: Open source (Accessed: 18 August 2026).

Note on sources and verification

The regulatory facts — effective dates, four grades, mandatory display of the lowest grade, self-assessment submission to the Korea Environment Corporation, and the fine ceiling — are from the Kim & Chang legal analyses, corroborated by the Kookmin Ilbo explainer, both retrieved. The survey figures (n = 1,013; fieldwork 25–27 September 2025; 39 per cent misreading; 47.5/25.2/24.1 per cent disposal split; 85.7 per cent wanting clearer guidance; the 2 per cent carton-recycling context figure) are as reported in the Eroun and Hankook Ilbo coverage of the Seoul KFEM survey; the NGO's own survey publication was not retrievable (access blocked), and the figures rest on the press accounts. The survey concerns aseptic cartons specifically, and this article does not extend its percentages to other "difficult"-graded packaging. Hong Soo-yeol's critique is an opinion column and is presented as such. The absence of any government, OECD or peer-reviewed outcome evaluation of the grade label is an absence claim based on searches conducted for this article in English and Korean; the fee-modulation linkage of grades is described at the system level and its design effects are expressly noted as unmeasured in the located record.

Last verified: 18 August 2026.