| | 2010 | | | Rank | Provinces | Employee | | 1 | Chiang Mai | 415,221 | | 2 | Si Sa Ket | 327,969 | | 3 | Nakhon Si Thammarat | 326,896 | | 4 | Ubon Ratchathani | 319,671 | | 5 | Surin | 316,490 | | 6 | Udon Thani | 283,344 | | 7 | Nakhon Sawan | 262,474 | | 8 | Sakon Nakhon | 186,682 | | 9 | Kalasin | 177,669 | | 10 | Chon Buri | 163,768 | | | Whole Kingdom | 4,851,249 |
| | | 2011 | | | Rank | Provinces | Employee | | 1 | Bangkok | 626,954 | | 2 | Nakhon Ratchasima | 522,283 | | 3 | Chiang Mai | 371,966 | | 4 | Si Sa Ket | 338,804 | | 5 | Khon Kaen | 337,157 | | 6 | Ubon Ratchathani | 336,716 | | 7 | Surin | 326,829 | | 8 | Buri Ram | 315,956 | | 9 | Chiang Rai | 299,483 | | 10 | Nakhon Sawan | 299,239 | | | Whole Kingdom | 12,060,879 |
| | | 2012 | | | Rank | Provinces | Employee | | 1 | Bangkok | 540,661 | | 2 | Nakhon Ratchasima | 483,170 | | 3 | Chiang Mai | 397,284 | | 4 | Ubon Ratchathani | 324,095 | | 5 | Si Sa Ket | 316,632 | | 6 | Chiang Rai | 313,875 | | 7 | Khon Kaen | 310,963 | | 8 | Surin | 308,806 | | 9 | Nakhon Si Thammarat | 303,277 | | 10 | Nakhon Sawan | 297,538 | | | Whole Kingdom | 11,483,951 |
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