CEO Score Survey of 80 Companies
Last Year's Average Tenure: 14.03 Years, Up 0.48 in Four Years
Kia and KT Over 20 Years... Doosan Bobcat Has the Shortest Tenure
Despite active job changes among the 20s and 30s generations and voluntary retirements due to the economic downturn, the average length of service at Korea's top 100 companies has slightly increased.
According to CEO Score, a corporate data research institute, on the 16th, an investigation of 80 out of the top 100 companies by sales that disclosed employee tenure over the past five years revealed that the average length of service at these companies last year was 14.03 years, an increase of 0.48 years compared to 2020.
CEO Score calculated the average length of service per employee by multiplying the average tenure by business sector or gender by the number of employees in each category, then dividing by the total number of employees. The resulting average tenure for large corporations showed a gradual increase: 13.55 years in 2020, 13.70 years in 2021, 13.63 years in 2022, and 13.91 years in 2023.
Notably, the increase among female employees was remarkable. The average tenure for women rose from 11.38 years in 2020 to 12.94 years in 2024, an increase of 1.56 years, whereas for men, it only increased from 14.29 years to 14.41 years during the same period, a rise of 0.12 years. Consequently, the gender gap in tenure narrowed from 2.91 years in 2020 to 1.47 years in 2024.
By company, the longest average tenure last year was at Kia (21.80 years), followed by KT (20.50 years), SK Incheon Petrochem (20.00 years), Korea Citibank (18.84 years), SK Energy (18.68 years), Hanon Systems (18.64 years), Korean Air (18.40 years), SK Geocentric (18.00 years), Standard Chartered Bank Korea (17.94 years), and S-Oil (17.80 years).
On the other hand, the company with the shortest average tenure among the top 100 was Doosan Bobcat (3.20 years). It was followed by Mirae Asset Capital (4.20 years), HD Hyundai Heavy Industries (4.30 years), Kiwoom Securities (6.58 years), Daou Technology (6.88 years), GS Retail (7.20 years), Naver (7.40 years), and Meritz Securities (7.40 years). However, HD Hyundai Heavy Industries’ tenure appears relatively short as it was disclosed based on its spin-off establishment date in June 2019.
The company with the largest increase in tenure was SK Networks, which rose from 9.05 years in 2020 to 13.92 years in 2024, an increase of 4.87 years. Other companies with significant increases include HD Hyundai Heavy Industries (up 3.40 years), E-Mart (up 3.20 years), Hankook Tire & Technology (up 3.00 years), Samsung SDS (up 2.80 years), Samsung C&T (up 2.60 years), Mirae Asset Securities (up 2.41 years), Lotte Shopping (up 2.40 years), Hyundai Engineering (up 2.30 years), and LG Display (up 2.20 years).
Conversely, Hyundai Motor experienced the largest decrease in tenure during the same period, dropping from 18.80 years to 15.80 years, a decrease of 3.00 years. Other companies with notable declines include SK Energy (down 2.31 years), Korea Zinc (down 2.17 years), Hanwha Life (down 1.70 years), SK Geocentric (down 1.63 years), KG Chemical (down 1.30 years), KT (down 1.10 years), and Hyundai Mobis (down 1.00 year).
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