Table 1.
General and occupational characteristics of subjects associated with the weekly working hours
| Characteristics | Total(N,%) | Weekly working hours | p-value* | ||
|---|---|---|---|---|---|
| ≤40 | 41-52 | > 52 | |||
| Total | 24,783(100) | 13,269(53.5) | 6956(28.1) | 4558(18.4) | |
| Gender | |||||
| Female | 11,890(48.0) | 6934(58.3) | 3182(26.8) | 1774(14.9) | < 0.001 |
| Male | 12,893(52.0) | 6335(49.1) | 3774(29.3) | 2784(21.6) | |
| Age (years) | |||||
| 20–29 | 3481(14.0) | 1841(52.9) | 990(28.4) | 650(18.7) | < 0.001 |
| 30–39 | 6469(26.1) | 3446(53.3) | 1977(30.6) | 1046(16.2) | |
| 40–49 | 7280(29.4) | 3959(54.4) | 2103(28.9) | 1218(16.7) | |
| 50–59 | 4995(20.2) | 2577(51.6) | 1386(27.7) | 1032(20.7) | |
| ≥ 60 | 2558(10.3) | 1446(56.5) | 500(19.5) | 612(23.9) | |
| Education | |||||
| Middle school graduate or below | 2659(10.7) | 1503(56.5) | 552(20.8) | 604(22.7) | < 0.001 |
| High school graduate | 9536(38.5) | 4354(45.7) | 2727(28.6) | 2455(25.7) | |
| College graduate or above | 12,588(50.8) | 7412(58.9) | 3677(29.2) | 1499(11.9) | |
| Monthly income (KRW) | |||||
| < 1,300,000 | 5478(22.1) | 3860(70.5) | 984(18.0) | 634(11.6) | < 0.001 |
| 1,300,000-1,999,000 | 6548(26.4) | 2747(42.0) | 2079(31.8) | 1722(26.3) | |
| 2,000,000-2,999,000 | 6964(28.1) | 3308(47.5) | 2282(32.8) | 1374(19.7) | |
| ≥ 3,000,000 | 5793(23.4) | 3354(57.9) | 1611(27.8) | 828(14.3) | |
| Occupation | |||||
| Managers or Professionals | 2594(10.5) | 1731(66.7) | 665(25.6) | 198(7.6) | < 0.001 |
| Office workers | 6644(26.8) | 4385(66.0) | 1858(28.0) | 401(6.0) | |
| Technicians | 5438(21.9) | 2279(41.9) | 1890(34.8) | 1269(23.3) | |
| Service or Sales workers | 6525(26.3) | 2877(44.1) | 1808(27.7) | 1840(23.7) | |
| Manual workers | 3582(14.5) | 1997(55.8) | 735(20.5) | 850(23.7) | |
| Employment status | |||||
| Regular | 18,754(75.7) | 9606(51.2) | 5729(30.5) | 3419(18.2) | < 0.001 |
| Temporary or Day labor | 6029(24.3) | 3663(60.8) | 1227(20.4) | 1139(18.9) | |
| Shift work | |||||
| No | 22,250(89.8) | 12,206(54.9) | 6242(28.1) | 3802(17.1) | < 0.001 |
| Yes | 2533(10.2) | 1063(42.0) | 714(28.2) | 756(29.8) | |
| Number of employees | |||||
| < 50 | 18,082(73.0) | 9220(51.0) | 5149(28.5) | 3713(20.5) | < 0.001 |
| 50–299 | 4593(18.5) | 2734(59.5) | 1282(27.9) | 577(12.6) | |
| ≥ 300 | 2108(8.5) | 1315(62.4) | 525(24.9) | 268(12.7) | |
*calculated by chi-square test