Job postings in Korea have become longer and more detailed over the past five years as companies spell out the specific skills they want amid the spread of artificial intelligence (AI), according to an analysis released Tuesday by job portal JobKorea. The online recruitment platform, operated by Worxphere, analyzed the text of job postings published on its site from 2021 through the third quarter of this year. The share of postings that included a separate section on preferred qualifications nearly doubled from 14.5 percent in 2021 to 28.3 percent this year. Postings listing required qualifications rose from 18.6 percent to 27.3 percent over the same period. Since 2025, preferred qualifications have appeared more often than required ones. Postings also grew longer. The median length rose 79 percent from 483 Korean characters, including spaces, in 2021 to 864 characters this year, while the average increased 32 percent from 817 to 1,077 characters. Postings mentioning AI skills are rising sharply. Those containing keywords such as “AI utilization,” “generative” and “prompt,” o