Document Retention Period · Electronic Document Retention
Records Retention Period and Electronic Document Preservation
What is a document retention period?
- A retention schedule is also the disposal standard
- Check statutory periods against the governing law and the latest official guidance
- Electronic retention: authenticity, timestamps, and access
Once retention periods are set by document type, you no longer have to wonder case by case whether something can be thrown away. Without a standard, two extremes emerge. Either everything is kept forever, so storage rooms and servers overflow and personal data is held longer than necessary, or someone deletes files on their own judgment and then faces a tax audit or labor dispute with no documents to submit. A retention schedule is a table that lists, one line per document, the period the law requires and the period the company needs, and it also serves as the disposal standard.
Retention periods are either set by law or set by the company. The Commercial Act requires retention of commercial books and key business documents, the Labor Standards Act requires retention of employment records such as labor contracts and wage ledgers, and tax law requires retention of transaction records. The Personal Information Protection Act works the other way, requiring personal data to be destroyed without delay once its purpose is fulfilled. That is why a single HR file can contain items that must be retained alongside items that must be destroyed. Statutory periods vary by law and document type and are sometimes amended, so check each document’s period against the governing law and the latest guidance from the competent authority before entering it in the table. The company’s own standard can be set based on the likelihood of disputes and reference value.
The question with electronic storage is whether the record will hold up as evidence later. Korea’s Electronic Documents Act recognizes the validity of electronic documents that meet certain requirements, which come down to whether the content is preserved exactly as it was when created, whether the author and time can be verified, and whether the file can be opened when needed. Dropping scanned files into a shared folder is not enough. You need a repository that keeps a change history, electronic signatures or timestamps, and file formats that stay readable over the long term. Training completion records and proof of statutory training delivery may be requested going back several years during a regulatory inspection, so the training team should also add its own documents to the retention schedule.
The most common gap in practice is having a retention schedule but never actually destroying anything. If expired job applications and former employees’ HR files are still sitting in cabinets and on servers, you can be cited not for a retention failure but for holding too much personal data. The opposite mistakes also recur: deleting contracts that still have retention time left while cleaning up cloud storage, or destroying paper originals right after scanning only to find the scanned file was corrupted. Electronic documents are preserved by systems, not people, so once a year you should check that access rights and backups carry over when the person in charge changes.
Seolyeong ParkGenerative AI and AX training specialist with 17 years of hands-on experience and 200+ sessions, who gets non-technical learners using AI right away
Ilyoung JungSmart factory, equipment management, and Industry 4.0 specialistThe duty of merchants to keep account books is an old rule dating back to the enactment of the Commercial Act. As labor, tax, and personal data laws each added their own retention and disposal periods, keeping a document-by-document retention schedule became standard practice. After the Electronic Documents Act was enacted in the 2000s, it became possible to keep electronic documents without paper originals, and with the shift to paperless offices, electronic retention requirements became a practical concern.
Consider a hypothetical case. Company A, the headquarters of a tutoring-academy franchise with 260 employees, had never discarded a document in the 18 years since its founding, filling 42 cabinets and 6TB of shared server space. An internal personal data audit found 1,900 job applications from 10 years earlier still on file. The CEO ordered a retention schedule and full disposal by year-end.
- Ms. Oh in General Affairs sorted the company’s documents into five groups (accounting, contracts, HR, training, and general) covering 31 document types. She had a tax accountant and a labor attorney confirm which law’s retention requirement applies to each, then listed the statutory period and the company’s own standard for each document in a single table.
- The training team lead pointed out that statutory training records and certificates of completion are the company’s own documents but were missing from the table. Ms. Oh added three types (training contracts, proof of delivery, and completion rosters) and aligned their retention period with HR records.
- We classified job applications as personal data whose purpose ended once hiring closed, destroyed 1,900 of them, and logged the date, quantity, method, and approver in a destruction register. We also changed the system settings so applications are now destroyed automatically a set period after the hiring deadline.
- They scanned the paper contracts into electronic storage and stamped them with a timestamp in a repository that keeps a change history. As IT advised, they destroyed the paper originals only after confirming the scans opened correctly and waiting three months.
- After the year-end cleanup, cabinets dropped from 42 to 15, server storage from 6TB to 2.1TB, and the following year's external audit raised 0 findings of excessive personal data retention.