The part-time work permit system and weekly allowed hours — the basics of legal employment.

1. What Is the Part-Time Work Permit System?

1-(1)Part-time Work Permit at a Glance

To work on a student visa — prior immigration permission is required

D-2 (study) and D-4 (training) visas are issued solely for academic study and language training in Korea. So if you want to take a part-time job, you must first obtain an "activity permit outside your status of sojourn" (commonly called a part-time work permit) from the Immigration and Foreign Affairs Office in advance. This permit is the official process that lets even a student work legally within a defined scope. If you work even a single day without it, the work counts as illegal employment regardless of the amount earned or the hours involved. Getting caught working illegally can lead to fines, refusal to extend your visa, or even forced departure from the country, so the safest approach is always to secure the permit before you ever start working.

Holders of D-2 (study) and D-4 (training) visas are primarily in Korea for academic purposes, so they must obtain prior permission from the Immigration and Foreign Affairs Office to work. This is called a part-time work permit (activity permit outside status of sojourn).

1-(2)Permit Conditions and Legal Basis

Basic Requirements
  • A recommendation letter from your academic advisor (or department head) is required
  • Must be properly enrolled and currently attending school
  • Must meet academic grade and attendance requirements
  • Certain industries are not permitted
Legal basis — "Activity Permit Outside Status of Sojourn"

A part-time work permit is not formal employment — it is an exceptional permit to engage in activities outside the original purpose (study) of a student visa (D-2·D-4).

  • Immigration Control Act Article 20 — Foreigners wishing to engage in activities not covered by their status of sojourn must obtain advance permission from the Minister of Justice
  • Immigration Control Act Enforcement Decree Article 25 — Provisions governing the application and review process for activity permits outside status of sojourn
  • Work is only permitted within the workplace, industry, and hours stated on the permit (working elsewhere requires a separate permit)
What if you work without prior permission? Working even a single day without permission is classified as "illegal employment."
  • Violation of the Immigration Act — up to 3 years in prison or a fine of up to 30 million won
  • You face a departure order / deportation + a re-entry ban to Korea for a set period
  • The Korean employer who hired you is punished the same way
  • "I just briefly helped at a friend's shop" or "I wasn't paid" are not accepted — the act of working itself is the violation

1-(3)When to Apply and School Recommendation

When can I apply?
  • First semester after arrival — Applications are possible in principle. However, a recommendation letter can only be issued once the school has confirmed attendance and enrollment.
  • D-2 undergraduate/junior college — The standard is usually a GPA of 2.0 or higher in the previous semester (may vary by school)
  • D-4 language training — Generally requires 6 months after arrival + an attendance rate of at least 70% at the language institute
  • Application must be completed before starting work — Applying after you have already started working is already a violation
When the school refuses to write a recommendation letter

Without a confirmation of recommendation from the school (International Affairs Office or academic advisor), immigration will not grant a permit. Common reasons for a recommendation being refused:

  • Insufficient attendance — Generally rejected if attendance falls below 70–80%
  • Insufficient grades from previous semester — GPA below 2.0 (or 2.5 depending on the school's standard)
  • Unpaid tuition or currently on a leave of absence
  • Already has a prior violation record (illegal stay or caught working illegally)
  • Has accumulated multiple academic warnings

What to do: Get written confirmation of the reason for refusal from the school, recover your attendance and grades over the next semester, then reapply. Going directly to immigration without a school recommendation will not work.

1-(4)Frequently Asked Questions

D-2 students can apply from their very first semester. However, since the school must confirm your "enrollment status" before issuing a recommendation letter, the process is usually started only after registration, course enrollment, and attendance have begun. The order is: ① notify the International Affairs Office of your intention to work part-time, ② obtain a recommendation letter from your academic advisor, and then ③ apply through HiKorea or immigration. A common point of confusion is that "being able to apply" does not mean "being able to work right away" — if you start working before the permit is issued, it counts as unpermitted work even in your first semester. Many schools require D-4 (language training) students to wait 6 months after arrival before applying, so check the criteria for your visa type with the International Affairs Office first, and refer to the application procedure section on this page for the documents and steps you will need.

First, get written confirmation from the school of the reason for the refusal (attendance, grades, or enrollment status). The most common reasons are that your previous semester's attendance fell below the standard (usually 70%) or your GPA fell below the standard (usually 2.0). The proper channel is to recover your attendance and grades over one semester and reapply the following semester; in the meantime, it helps to discuss a recovery plan with the International Affairs Office in advance. Going to immigration directly without a school recommendation will not result in a permit. In particular, borrowing someone else's recommendation letter or submitting documents that differ from the facts is itself a violation, and if caught it works against you in later visa extension or change reviews. Before reapplying the next semester, checking your attendance, grades, and enrollment status in advance with the self-check checklist on this page can reduce the chance of being refused again for the same reason.

When you apply through HiKorea online civil service, processing usually takes about 7–14 business days, and in-person applications are similar. It can take longer if a document correction is requested, so it is safe to finish your application at least 3 weeks before the date you plan to start working. You may work from the day the permit is issued — more precisely, from the start date of the "permit period" stated on the permit — and only within the workplace, industry, and hour range specified on the permit. If you start working before receiving the permit, it is all classified as unpermitted work regardless of the amount or hours, so do not give in to suggestions like "it will come soon, let us just start first." The shortest and longest processing cases and delays due to corrections are summarized in the post-application processing time part of this page, so consider them when planning your schedule.

No. Permits usually expire on a 6-month to 1-year cycle, and you must apply for renewal before expiry to keep working without a gap. You must reapply or file a change application whenever your working hours change as the semester and vacation switch, whenever you move workplaces, and whenever your job duties change. In particular, when you move from the store you worked at, the existing permit immediately loses effect, so you must obtain a permit from scratch based on the new workplace. Working at a different store while carrying your existing permit becomes a separate "unreported workplace" violation. The situations that require a change and the procedures are laid out step by step in the application procedure part of this page.

2. Weekly Allowed Hours

2-(1)Weekly Work-Hour Limits at a Glance

Allowed hours differ between the semester and vacation periods

How many hours you may work per week is set by your visa type (D-2 undergraduate/graduate, D-4 language training) and by the academic calendar. During the semester the weekly hour limit is applied fairly strictly so that work does not interfere with your studies, but during vacation periods this limit is lifted, letting you work more hours than usual. So if your goal is to save up money in earnest, it is wise to make full use of the vacation months. One important point to remember: if you work at two or more places at the same time, the hours are not counted separately for each job but are added together against your limit. In other words, no matter how many places you work, you must manage things yourself so that the combined total stays within the allowed hours.

During the Semester
  • Undergraduate (D-2-1·2) up to 30 hrs/week
  • Master's/Doctoral (D-2-3·4) up to 35 hrs/week
  • Language training (D-4) separate standard (check with school/office)
  • 10 hrs/week if Korean language requirement not met (15 hrs for graduate students)
VS
During Vacation
  • No time limit on weekends and vacations if Korean language requirement is met
  • If requirement not met, 10 hrs/week (15 hrs for graduate students) applies even during vacation
  • A change-of-hours application is required when transitioning between semester and vacation
  • Permit becomes void upon taking a leave of absence or graduating

2-(2)Allowed Hours by Visa and Term

The number of hours you can work per week varies by visa type and whether it is a semester or vacation period.

CategoryWeekdays during semester (requirement met)Requirement not metWeekends & Vacation
Junior College/Undergraduate (D-2-1·2)30 hrs/week10 hrs/weekUnlimited if met / 10 hrs/week if not met
Master's/Doctoral (D-2-3·4)35 hrs/week15 hrs/weekUnlimited if met / 15 hrs/week if not met
Language Training (D-4)Separate standard — check with your school or local immigration office
If the Korean language requirement (see table below) is not met, hours are limited to 10 hrs/week (15 hrs/week for graduate students) during both the semester and vacation. Detailed grade criteria are summarized below.
How are "semester" and "vacation" distinguished?
  • The standard is the academic calendar of your own school (official semester and vacation periods). It is not based on the calendar season.
  • Junior colleges typically follow this schedule: Semester 1 (March–June), Summer Vacation (July–August), Semester 2 (September–December), Winter Vacation (January–February).
  • D-2 (study) — follows the academic calendar of your enrolled university exactly.
  • D-4 (language training) — follows the semester and vacation schedule of the language institute. This may differ from the regular university.
  • If you are enrolled in a summer/winter session, that period is considered "during the semester."

2-(3)Penalties for Exceeding and Combined Hours

What happens if you exceed the allowed hours? (Penalties by severity)
  • 1st offense (minor) — Notification of penalty (fine) + even if sojourn is maintained, part-time work permit applications are not accepted for 1 year from the date the fine is paid.
  • 2nd offense or more / significant excess of hours — Deportation order (voluntary departure, entry ban for a certain period).
  • 3rd offense or more, or intentional violations (prohibited industries, concealing multiple workplaces, etc.) — Forced removal + restricted re-entry to Korea (up to 10 years).
  • The school is also notified, which may negatively affect your recommendation and enrollment status.
Working at two places simultaneously — hours are "combined"
  • D-2 students can be permitted up to 2 workplaces, D-4 students up to 1 (may vary by school/office).
  • When working at two places, the weekly limit is checked against the total hours from both places combined. They are not counted separately.
  • E.g. If the limit for undergraduates during the semester is 30 hrs, then Café A 18 hrs + Convenience Store B 15 hrs = 33 hrs → violation.
  • If you are permitted for one place and additionally work at another, it becomes a separate violation as an "unreported workplace."
2026 Minimum Wage 10,320 KRW 30 hrs/week monthly equivalent approx. 1,340,000 KRW Night shift (22:00–06:00) 50% premium

※ Based on undergraduate 30 hrs/week during the semester, approx. 1,340,000 KRW per month (before deducting the 4 major insurances and income tax). During vacation there is no hour limit — for example, working 40 hrs/week comes to about 1,800,000 KRW per month, and an annual total of roughly 15,000,000–19,000,000 KRW (varies by region, wage, and hours worked). If working 15 hrs/week or more, weekly holiday pay (주휴수당) applies separately.

Weekly hours calculation standard — In immigration practice, weekly hours are generally counted from Monday to Sunday, but this may be applied differently depending on the school or local office. Always check with your school's International Affairs Office first.

2-(4)Frequently Asked Questions

During the semester, since academics are the primary purpose, weekly hours are strictly limited (30 hours for undergraduates and 35 hours for graduate students when requirements are met). If you meet the Korean language requirement, the hour cap is lifted during vacation and full-time work is possible, but only "within the hour range stated on the permit." Note that using your semester permit to work full-time during vacation can be a violation. You therefore have to file a separate application to change your hours for vacation, and switch back to the semester version when the semester resumes. Also remember that the standard for "semester" and "vacation" is not the calendar season but your school's official academic schedule, and that if you do not meet the Korean language requirement, the limit of 10 hours per week (15 hours for graduate students) stays in effect even during vacation. To check in advance whether your weekly hours exceed the limit, use the working-hours calculator on this page.

Because a leave of absence is not "currently enrolled," the very basis for a D-2·D-4 part-time work permit disappears. The existing permit should be considered void as soon as the leave is processed, and continuing to work in that state is unpermitted work. The bigger problem is that if the premise of your status of stay (normal studies) collapses due to the leave, your stay itself can become unstable. Therefore, before taking a leave of absence, you must first report to immigration and confirm what residency measures are needed depending on the reason (illness, family matters, etc.). For detailed management of your status of stay, refer to the visa guide page. After you return and are in normal enrolled status again, you can apply for the part-time work permit from scratch.

It is judged not by the time you actually spent at the workplace but by your employment contract, attendance records, and pay stubs. During an inspection, the commute records and the four major insurance filings kept by the employer serve directly as evidence. So if you work at two or more places, remember that the hours at each workplace are all combined, and you must manage your own records so as not to exceed the combined limit. The idea that "it is fine if you are paid only in cash and leave no records" is wrong — on the contrary, it removes the evidence that would protect you if your wages are withheld or you are treated unfairly. Be sure to keep your own copies of the employment contract and pay stubs, and if you suffer wage arrears or unfair treatment, refer to the response procedures on the violations and protection page.

Under the Labor Standards Act, foreign international students are subject to the same premium pay as Korean workers. The principle is a 50% premium for night work (22:00 to 06:00 the next day), a 50% premium for holiday work, and a 50% premium for overtime exceeding 8 hours. However, workplaces with fewer than 5 full-time workers may be exempt from premium pay, so at small restaurants or cafés you may receive only the base hourly wage. That is why, before you start working, it is important to check in advance ① the number of full-time workers at that workplace and ② how the night, holiday, and overtime rates are specified in the contract. If you do not receive the premium pay you were promised, you can demand correction based on your pay stub, and responses regarding wages, taxes, and unfair treatment are explained in more detail on the jobs and wages page and the violations and protection page.

Working Hours Calculator

3. Differences by TOPIK Level

3-(1)TOPIK Level Differences at a Glance

Korean language proficiency and year of study determine the allowed hours

Immigration applies differentiated weekly limits for part-time work based on TOPIK level (or KIIP stage) and previous semester grades. Undergraduate years 1–2 must meet TOPIK Level 3 (KIIP Stage 3), and undergraduate year 3 and above/graduate students must meet TOPIK Level 4 (KIIP Stage 4) to receive the standard limit (undergraduate 30 hrs/week, graduate 35 hrs/week, unlimited on weekends and vacations). Those who do not meet the requirement are limited to 10 hrs/week (graduate students 15 hrs/week) during both the semester and vacation. Transcripts are valid for 2 years from the date of issue.

3-(2)Allowed Hours by Level and Year

Allowed hours vary by Korean language proficiency and year of study. (General standard — subject to change)

CategoryKorean Language RequirementWeekdays during semesterWeekends & Vacation
Undergraduate years 1–2 TOPIK Level 3 / KIIP Stage 3 or above 30 hrs/week No limit
Undergraduate year 3 and above TOPIK Level 4 / KIIP Stage 4 or above 30 hrs/week No limit
Graduate (Master's/Doctoral) TOPIK Level 4 / KIIP Stage 4 or above 35 hrs/week No limit
Requirement not met (all categories) Below required level/grade 10 hrs/week (graduate students 15 hrs/week) 10 hrs/week (graduate students 15 hrs/week)
※ Common requirement: average grade C (2.0) or above in the previous semester. Language training (D-4) has separate standards, and some positions such as interpretation/translation require a higher Korean language level. Detailed standards may vary by school or local office.

3-(3)TOPIK Recognition Criteria and Alternatives

When is a TOPIK score recognized?
  • Score submitted at admission — The TOPIK level at the time of admission is used as the standard as-is. The school already has it on file without any separate report.
  • Retaking the test while enrolled — If your level has gone up, you can submit the new transcript to the school's International Affairs Office and to immigration to request an increase in your weekly limit.
  • TOPIK score validity = 2 years from date of issue — Scores submitted at admission also expire after 2 years. After expiry, you must retake the test or substitute with KIIP or an in-school Korean language test result.
  • If you try to renew your part-time work permit with an expired TOPIK score, it may be treated as "Korean language proficiency unverified," and your limit could drop to the unmet threshold (10 hrs/week, or 15 hrs/week for graduate students).
If you don't have TOPIK Level 3 — Alternative accepted options

Even without a TOPIK score or with a low score, if you are recognized for one of the following, you may apply close to the standard limit.

  • Korean language training completion certificate — Completion certificate for Level 4 or above at a university-affiliated Korean language institute. Recognized as equivalent to TOPIK Level 4 at many universities.
  • KIIP (Social Integration Program) completion — Operated by the Ministry of Justice. Passing the Stage 4 mid-term exam = recognized as equivalent to TOPIK Level 3; passing the Stage 5 final exam = recognized as equivalent to TOPIK Level 4.
  • In-school Korean proficiency test — Some universities operate their own tests, and the results can be attached to the school recommendation letter and submitted to immigration.
  • A school confirmation letter stating that you are regularly completing your major coursework in Korean can also be used as supplementary material.

3-(4)Frequently Asked Questions

It is not automatic. If you receive a new TOPIK transcript, you must ① first submit it to the school's International Affairs Office and ② reapply for a part-time work permit change (or renewal) for your limit to be reflected under the new level. Until the application and permit come through, the hours stated on your existing permit continue to apply, so working more on your own just because your level went up is a violation. Processing also usually takes 7–14 business days, so if you want to raise your limit, it is safe to file the change application in advance during the vacation before the busy new semester. The permitted hours that vary by level can be found in the level- and grade-based table on this page.

It is safe to apply at least 2–3 weeks before you start working. This is because HiKorea online processing usually takes 7–14 business days, and it takes longer if a document correction is requested. Before applying, checking with the self-check checklist whether your enrollment/grade/attendance certificates, advisor's recommendation letter, business registration certificate and employment contract, and (if applicable) TOPIK transcript are all ready can reduce delays caused by corrections. Applications pile up right before a new semester and are delayed further, so many students prepare in advance during the vacation before the semester starts. Do not forget that if you start working before the permit's issue date, that entire period is treated as unpermitted work.

The official validity period of a TOPIK transcript is 2 years from the date of issue. Even the score you submitted at admission expires after 2 years, so you must check in advance whether your score is still valid at the time you renew your part-time work permit. If your score has expired at the time of renewal, you may be classified as having unverified Korean language proficiency and drop to the unmet limit (10 hours per week, 15 hours for graduate students), or some occupations such as interpretation and translation may be restricted. As expiry approaches, it is safe to prepare alternative materials in advance, such as ① retaking the TOPIK, ② completing KIIP (the Social Integration Program), or ③ a completion certificate from a university-affiliated language institute. The accepted alternatives are summarized in the TOPIK recognition criteria part of this page.

4. Prior Permission Application Process

4-(1)Application Process at a Glance

School recommendation → Document preparation → Immigration application, 5 steps

Getting a part-time work permit is not a single one-step application but a process that moves through several stages. It starts with notifying your school's International Affairs Office, then gathering the required documents one by one — including your academic advisor's recommendation letter and your employment contract — and finally submitting them to HiKorea or the Immigration and Foreign Affairs Office. If even one document is missing, processing can be delayed, so it helps to check the full list in advance. Because the average processing time after applying is about 7–14 business days, it is safest to finish preparing your documents and submitting the application at least 3 weeks before your planned start date. The more lead time you allow, the better you can avoid being unable to work because the permit was delayed.

Pre-Application Self-Check Checklist
  • Whether attendance rate for the previous semester is maintained at 70% or above
  • Whether previous semester GPA is 2.0 or above (2.5 depending on school standards)
  • Whether tuition payment and enrollment status are in good standing
  • Whether you have a relationship where you can receive a recommendation letter from your academic advisor or department head
  • Whether the employer's business registration industry category is not in the prohibited list
  • Whether the employment contract clearly states hourly wage, days, hours, and job duties
  • Whether the TOPIK transcript is within 2 years of the date of issue
1

Notify the School's International Affairs Office

First notify the school's International Affairs Office of your intention to work part-time and confirm the in-school procedures.

2

Obtain Academic Advisor Recommendation Letter

Obtain a recommendation letter from your academic advisor or department head confirming that your studies will not be adversely affected.

3

Prepare Employer and Employment Contract Information

Prepare an employment contract that clearly states the workplace information, working hours, job duties, and wages.

4

Apply via HiKorea or at the Immigration Office

Apply online at HiKorea (hikorea.go.kr) or in person at your local Immigration and Foreign Affairs Office.

5

Permit Issuance and Start of Work

Once the permit is issued, you may only work within the scope stated on the permit.

Required Documents (general cases)
  • Part-time work permit application form
  • Copy of passport and alien registration card
  • Proof of enrollment, grades, and attendance
  • Academic advisor recommendation letter
  • Copy of employer's business registration certificate
  • Employment contract (hours, duties, wages)
  • TOPIK transcript (if applicable)

4-(2)Application Document Checklist (9 items)

1. Part-time work permit application form

HiKorea form or the form available at the immigration office. Fill in all personal information and work details (address, hours, job duties).

2. Passport copy

Personal information page + visa page. If the remaining validity is less than 6 months, renewal is recommended first.

3. Copy of alien registration card

Both front and back. If lost, you must apply for a replacement first.

4. Enrollment certificate

Within 1 month of the issue date. Available from the school's academic information system or self-service kiosk.

5. Academic transcript

Previous semester GPA must be at or above a certain level (usually C/2.0 or above). May be waived for new students.

6. Attendance certificate

70% or above is the general standard. D-4 is assessed more strictly.

7. Academic advisor recommendation letter

A recommendation letter in the name of the department head or academic advisor guaranteeing no adverse effect on studies. The school has a standard form.

8. Copy of employer's business registration certificate

Business registration certificate in the employer's (store's) name. Verify yourself that the industry category is not in a prohibited field.

9. Employment contract

Must include workplace location, days, hours, job duties, hourly wage, and payment date. Verbal agreements alone are not acceptable.

4-(3)Online (HiKorea e-Civil Service) vs. In-Person Application

Most schools recommend applying online. In-person is advantageous when corrections or immediate confirmation are needed.

CategoryHiKorea e-Civil ServiceIn-Person at Immigration and Foreign Affairs Office
Hours24 hours (excluding maintenance windows)Weekday business hours (09:00–18:00)
FeeRelatively lower for online applicationsBased on in-person application rate
Processing SpeedAverage 7–14 business daysAverage 7–14 business days (wait time separate)
Document CorrectionOnline correction request → re-uploadCan be corrected on the spot
AdvantagesNo waiting or travel needed, real-time status trackingCan consult directly with the officer in charge
LimitationsRequires account registration and joint certificate, file size limitsAppointment, queue number, and travel time required

4-(4)Processing Time After Application

Average 7–14 business days Fastest 3–5 business days Longest 20+ business days (with corrections)

※ Applications tend to pile up right before new semesters (late February and August) and around the end/start of the year, causing further delays. Applying at least 3 weeks before your planned start date is recommended.

How to get assistance from the school's International Affairs Office
  • Step 1 — Prior consultation: Notify the office of your intention to work part-time and receive the school's own guidelines and forms.
  • Step 2 — In-school approval: The recommendation letter is circulated in the order: academic advisor → department head → International Affairs Office. Usually takes 3–5 days.
  • Step 3 — Document package review: The International Affairs Office reviews the documents before submission to immigration. Any missing items can be caught in advance.
  • Step 4 — Notification after application: Once the permit is issued, it is recommended to submit a copy to the school (for safekeeping against loss and for use at renewal).
Procedures for changes after permit issuance
  • Change of workplace (job transfer) — Existing permit becomes void immediately. Must apply for a new part-time work permit from scratch based on the new workplace.
  • Change of working hours/days — Even at the same workplace, a change application is required if the hours change. This is especially common at the semester-to-vacation transition.
  • Change of job duties — A change application is required if duties change from simple assistance to a different role. If the change moves into a prohibited category, the permit itself will be revoked.
  • End of employment — There is no mandatory reporting obligation, but it is safe to inform the school of the end date to have it on record for the next permit application.
  • Leave of absence/work hiatus — Since taking a leave of absence removes the prerequisite condition (enrollment) for the permit, the permit becomes void. You must reapply after returning to school.
Common obstacles at each stage of the permit application
  • Insufficient attendance — If the previous semester attendance is below 70%, the school recommendation itself will be refused.
  • Business registration industry mismatch — There are many cases where the registration shows "adult entertainment" but the applicant thought it was a "restaurant" and the application is rejected.
  • Missing items in employment contract — If even one of the hourly wage, days, or workplace address is missing, a correction is requested, extending the processing time accordingly.
  • TOPIK transcript expired — A transcript older than 2 years from the issue date is not recognized, causing the limit to drop to the unmet threshold (10 hrs/week, or 15 hrs/week for graduate students).

4-(5)Frequently Asked Questions

HiKorea online civil service is set at a lower rate than in-person applications. The exact amount can vary depending on the time of application and your status of stay, so the most accurate way is to look it up directly under your own case name (activity outside status of stay permit) in HiKorea's 'Civil Affairs Service Guide.' The differences in fees and processing between online and in-person applications are summarized in the comparison table on this page, so weigh both cost and convenience and choose the method that suits you.

Yes. After being notified of the reason for rejection, you can resolve that reason (supplementing documents, recovering attendance and grades, changing industry, etc.) and apply again. However, a record of being repeatedly rejected for the same reason can work negatively in later visa extension or change reviews, so rather than blindly reapplying, it is better to analyze the rejection reason accurately together with the school's International Affairs Office, fill the gaps, and then reapply. For frequently blocked reasons such as a business-registration industry mismatch or missing items in the employment contract, check in advance by referring to the 'common sticking points' part of this page.

Yes. Applications are accepted right after the semester starts or in the middle of it. However, adding the immigration processing time (an average of 7–14 business days) and the time for the school recommendation letter approval, it can take 3–4 weeks until you actually start working. So even if a job suddenly comes up during the semester, you often cannot start right away, and many students apply in advance during vacation if they plan to work. Once you have applied, you can work legally from the start date of the permit period stated on the permit. The shortest and longest processing cases can be found in the post-application processing time part of this page.

You can look up and reprint your permit record on HiKorea e-Civil Service, and if you visit an immigration office you can apply for reissuance. If you are inspected while it is lost, it can be hard to immediately prove that you hold a permit, which can create unnecessary misunderstandings, so it is safest to separately save a photo or copy right after you receive the permit. If you have also lost your alien registration card, you must apply for its reissuance first, and since a copy of the permit is also used to verify your history when applying for renewal or changes, keep it safe.