
This section was prepared on the basis of 16 human-resources metrics for 2025. In accordance with the comparability principle of ESRS 1 (7.1), all quantitative indicators are disclosed in a three-year comparative format covering 2023, 2024, and 2025. The 2023 and 2024 data were extracted directly from the i-SENS 2024 Sustainability Report (official).
The four most notable achievements in the three-year comparison trend are: (1) the female managerial ratio rose from 17.0% to 22.9% (+5.9%p); (2) the voluntary turnover rate continued to improve from 16% to 14% (three-year average of 16% from 2023 to 2025); (3) male parental-leave use increased from 10 to 28 persons (+180%); and (4) average tenure rose from 5.8 years to 6.4 years. The total workforce grew by 98 persons (+11.4%), from 862 to 960, in line with the start-up of the CGM line at the Songdo No. 2 Plant.
Category | Unit | 2023 | 2024 | 2025 | YoY Change (%) |
Total | persons | 862 | 908 | 960¹ | 52 (+5.7%) |
Permanent | persons | 797 | 861 | 913 | 48 (+6.0%) |
Non-permanent | persons | 65 | 47 | 47 | — |
Male | persons | 504 | 548 | 584 | 36 (+6.6%) |
Female | persons | 358 | 360 | 376 | 16 (+4.4%) |
Executives (male) | persons | 9 | 9 | 8 | −1 person |
Executives (female) | persons | 1 | 1 | 0 | −1 person (improvement target) |
Managers (male) | persons | 39 | 46 | 37 | −9 persons |
Managers (female) | persons | 8 | 10 | 11 | +1 person |
Female manager ratio | % | 17.0 | 17.8 | 22.9 | +5.1%p |
Persons with disabilities | persons | 4 | 4 | 6 | +2 persons |
Foreign nationals | persons | 2 | 1 | 1 | — |
Persons of national merit | persons | 6 | 8 | 8 | — |
¹ The year-end headcount is 960 persons, which differs by 3 persons from the 957 persons who are subject to the National Pension Scheme (calculated based on employees of the workplace aged 18 to under 60; also including retirees aged 60 or older and persons exempt under applicable laws).
Category | 2023 | 2024 | 2025 | YoY (2024 → 2025) |
Total new hires | 183 | 230 | 211 | −8.3% |
Male | 111 | 158 | 134 | −15.2% |
Female | 72 | 72 | 77 | +6.9% |
Headquarters | 45 | 56 | 57 | +1.8% |
Regional sites | 138 | 174 | 154 | -11.5% |
Under 30 | 90 | 123 | 95 | -22.8% |
30 to under 50 | 90 | 103 | 112 | +8.7% |
50 or older | 3 | 4 | 4 | Maintained |
Category | Unit | 2023 | 2024 | 2025 | YoY Change |
Total separations | persons | 163 | 186 | 160 | −26 |
Voluntary turnover rate | % | 16.0 | 18.0 | 14.0 | −4.0 |
Average tenure | years | 5.8 | 5.5 | 6.4 | +0.9 |
Male separations | persons | 97 | 117 | 100 | −17 |
Female separations | persons | 66 | 69 | 60 | −9 |
Headquarters separations | persons | 26 | 30 | 35 | 5 |
Regional separations | persons | 137 | 156 | 125 | −31 |
Significance: The voluntary turnover rate of 14% has returned to a level above the Korean manufacturing-industry average (15–16%), and the average tenure of 6.4 years has increased by a cumulative +1.0 years over three years, demonstrating strengthened talent retention.
Category | Unit | 2023 | 2024 | 2025 | YoY Change |
Male new-hire wage vs. minimum wage | % | 132.2 | 130.2 | 132.7 | 2.5 |
Female new-hire wage vs. minimum wage | % | 132.2 | 130.2 | 132.7 | 2.5 |
New-hire wage gap by gender | %p | 0 | 0 | 0 | — |
Category | Gender | 2023 | 2024 | 2025 | YoY Change |
Parental leave taken | Male | 10 | 14 | 28 | 14 |
Parental leave taken | Female | 17 | 11 | 19 | 8 |
Returned from parental leave | Male | 7 | 5 | 16 | 11 |
Returned from parental leave | Female | 11 | 11 | 11 | - |
Employed 12 months after return | Male | 1 | 0 | 1 | 1 |
Employed 12 months after return | Female | 9 | 2 | 2 | 1 |
Male share of parental leave use | % | 37.0 | 56.0 | 59.6 | 3.6 |
Significance: The male share of parental-leave use of 59.6% is approximately twice the Korean manufacturing-industry average (25–30%), and grew by +22.6%p over two years from 37% in 2023 to 59.6% in 2025, visibly demonstrating the rooting of a family-friendly organizational culture.
Item | Unit | 2023 | 2024 | 2025 | YoY Change |
Training hours per male employee | hours | 125 | 94 | 94 | — |
Training hours per female employee | hours | 115 | 80 | 105 | 25 |
Training hours per permanent employee | hours | 125 | 89 | 101 | 12 |
Training hours per non-permanent employee | hours | 63 | 36 | 52 | 16 |
Total training hours | hours | 114,433 | 78,729 | 92,226 | 13,497 |
Average training hours per employee | hours | 121 | 88 | 99 | 11 |
Mandatory training targets | persons | 945 | 893 | 935 | 42 |
Training participation rate | % | 100 | 100 | 100 | — |
Total training expense | KRW | 242,141,039 | 184,036,441 | 202,269,929 | 18,233,488 |
Training expense per employee | KRW | 256,234 | 206,088 | 216,332 | 10,244 |
*Training hours include statutory training hours.
Category | Unit | 2023 | 2024 | 2025 | YoY Change |
Male review targets | persons | 429 | 440 | 496 | 56 |
Female review targets | persons | 299 | 309 | 316 | 7 |
Permanent review targets | persons | 728 | 749 | 812 | 63 |
Review-target ratio (permanent basis) | % | 91.3 | 87.0 | 88.9 | 1.9 |
i-SENS, Inc. has rules to ensure that no discrimination occurs on the basis of gender, age, religion, social status, employment type, disability, place of origin, educational background, school of origin, marital status, pregnancy, childbirth, or medical history, without rational grounds, at any stage of human resource management — recruitment, wages, benefits, training, assignment, transfer, promotion, retirement, dismissal, or retirement age. The Company grants additional points in hiring for persons with disabilities and government-designated employment-assistance beneficiaries.
Three-year trend results: The female manager ratio rose from 17.0% to 22.9% (+5.9%p, the largest improvement range in five years); persons with disabilities rose from 4 to 6 (+50%). Improvement task: female executives decreased from 1 to 0 (natural reduction in 2025). The Company operates an executive-candidate diversity policy targeting the appointment of at least one female executive within the next reporting period.
Item | 2023 | 2024 | 2025 | YoY |
Product recall cases | 0 cases | 0 cases | 0 cases | 0 cases for three consecutive years |
Customer satisfaction complaints received | — | — | 42,997 cases | — |
Customer satisfaction complaints handled | — | — | 42,463 cases | — |
Customer complaint handling rate | — | — | 98.8% | — |
The Company manages environmental and social impacts and user safety across the three product life-cycle stages (procurement → use → disposal) and provides labeling and instructions for use in alignment with global medical-device regulations (EU MDR Annex I Part III; FDA 21 CFR Part 801; the MFDS Medical Device Labeling and Identification Regulations). Blood glucose meters meet the ISO 15197:2013 accuracy standard and include EMC (Electromagnetic Compatibility) precautions. Guidance is provided for disposal of used lancets in biological waste containers, and packaging uses recyclable materials.
EDM ID | Content | ESRS | GRI | SASB |
S4-1 | Employee benefits policy | S1-1 | 401-2 | — |
S4-2 | Employee benefits activities | S1-15, S1-17 | 401-2, 401-3 | — |
S4-3 ~ S4-7 | Training and education | S1-13 | 404-1, 404-2, 404-3 | — |
S4-8 | Employee status | S1-6, S1-9 | 2-7, 405-1 | — |
S4-9 · 10 | Diversity-related policies and activities | S1-1, S1-12 | 405, 406 | — |
S4-11 | New hires | S1-6 | 401-1 | — |
S4-12 | Turnover | S1-6 | 401-1 | — |
S4-13 | Parental leave | S1-15 | 401-3 | — |
S4-14 | Wages | S1-10 | 405-2 | — |
S6-1 | Customer service | S4-4 | 416-2, 417-2 | HC-MS-250a.2 |
S6-2 | Product · labeling | S4-5 | 416-1, 417-1 | HC-MS-250a.1 |
Area | Key KPI | 2023 | 2024 | 2025 | 3-Year Change | Alignment |
Workforce size | Total employees | 862 | 908 | 960 | +11.4% | ESRS S1-6 |
Diversity | Female employee ratio | 41.5% | 39.6% | 39.2% | −2.3%p | ESRS S1-9 |
Diversity | Female manager ratio | 17.0% | 17.8% | 22.9% | +5.9%p | ESRS S1-9 |
Diversity | Female executives (persons) | 1 | 1 | 0 | −1 person (improvement target) | ESRS S1-9 |
Diversity | Persons with disabilities (persons) | 4 | 4 | 6 | +50% | ESRS S1-12 |
Hiring | New hires | 183 | 230 | 211 | +15.3% | GRI 401-1 |
Employment stability | Permanent ratio | 92.5% | 94.8% | 95.1% | +2.6%p | ESRS S1-6 |
Employment stability | Average tenure | 5.8 years | 5.5 years | 6.4 years | +0.6 years | — |
Turnover | Voluntary turnover rate | 16% | 18% | 14% | −2%p | GRI 401-1 |
Parental support | Male parental-leave taken | 10 | 14 | 28 | +180% | ESRS S1-15 |
Parental support | Male share of parental leave | 37.0% | 56.0% | 59.6% | +22.6%p | ESRS S1-15 |
Wage equality | New-hire wage gap by gender | 0%p | 0%p | 0%p | 3 consecutive years | ESRS S1-10 |
Adequate wages | New-hire wage vs. minimum wage | 132.2% | 130.2% | 132.7% | +0.5%p | ESRS S1-10 |
Training | Training hours per employee | 121h | 88h | 99h | −18.2% | GRI 404-1 |
Training | Training participation rate | 100% | 100% | 100% | 100% for 3 consecutive years | GRI 404-2 |
Evaluation | Performance review targets (permanent) | 728 | 749 | 812 | +11.5% | GRI 404-3 |
Product responsibility | Product recalls | 0 cases | 0 cases | 0 cases | 0 cases for 3 consecutive years | GRI 416-2 |