Distribution of attributes by average working hours (AWHs) over the past 6 months
| <140 hour/month (>35 hour/week) | 140–180 hour/momth (35–45 hour/week) | 180–205 hour/month (45–51.25 hour/week) | 205–220 hour/month (51.25–55 hour/week) | ≥220 hour/month (≥55 hour/week) | ||
| (n=2454) | (n=9793) | (n=2287) | (n=424) | (n=185) | ||
| N (%) | n (%) | n (%) | n (%) | n (%) | ||
| Sex | Men | 960 (39.1) | 6305 (64.4) | 1949 (85.2) | 379 (89.4) | 174 (94.1) |
| Women | 1494 (60.9) | 3488 (35.6) | 338 (14.8) | 45 (10.6) | 11 (5.9) | |
| Age group | ≤29 years | 407 (16.6) | 1840 (18.8) | 444 (19.4) | 110 (25.9) | 41 (22.2) |
| 30–39 years | 601 (24.5) | 2431 (24.8) | 634 (27.7) | 132 (31.1) | 53 (28.6) | |
| 40–49 years | 548 (22.3) | 2364 (24.1) | 614 (26.8) | 102 (24.1) | 44 (23.8) | |
| 50–59 years | 457 (18.6) | 2115 (21.6) | 480 (21.0) | 70 (16.5) | 45 (24.3) | |
| ≥60 years | 441 (18.0) | 1043 (10.7) | 115 (5.0) | 10 (2.4) | 2 (1.1) | |
| Shift work | No | 2087 (85.0) | 9180 (93.7) | 2234 (97.7) | 414 (97.6) | 183 (98.9) |
| Yes | 367 (15.0) | 613 (6.3) | 53 (2.3) | 10 (2.4) | 2 (1.1) | |
| COVID-19 | No experience | 1629 (66.4) | 6714 (68.6) | 1308 (57.2) | 102 (24.1) | 36 (19.5) |
| Experience | 825 (33.6) | 3079 (31.4) | 979 (42.8) | 322 (75.9) | 149 (80.5) | |