| | 2004 | | | Rank | Provinces | Employee | | 1 | Bangkok | 922,808 | | 2 | Nakhon Ratchasima | 629,049 | | 3 | Chiang Mai | 424,802 | | 4 | Khon Kaen | 415,349 | | 5 | Chiang Rai | 406,183 | | 6 | Nakhon Si Thammarat | 375,306 | | 7 | Ubon Ratchathani | 372,721 | | 8 | Si Sa Ket | 368,156 | | 9 | Buri Ram | 365,812 | | 10 | Surin | 350,674 | | | Whole Kingdom | 13,957,521 |
| | | 2005 | | | Rank | Provinces | Employee | | 1 | Bangkok | 748,284 | | 2 | Nakhon Ratchasima | 674,755 | | 3 | Chiang Mai | 457,364 | | 4 | Chiang Rai | 424,972 | | 5 | Buri Ram | 395,241 | | 6 | Ubon Ratchathani | 382,890 | | 7 | Surin | 374,036 | | 8 | Khon Kaen | 373,411 | | 9 | Si Sa Ket | 373,214 | | 10 | Roi Et | 352,778 | | | Whole Kingdom | 14,138,199 |
| | | 2006 | | | Rank | Provinces | Employee | | 1 | Bangkok | 760,946 | | 2 | Nakhon Ratchasima | 604,912 | | 3 | Chiang Mai | 433,779 | | 4 | Si Sa Ket | 406,803 | | 5 | Chiang Rai | 381,930 | | 6 | Ubon Ratchathani | 371,973 | | 7 | Buri Ram | 371,457 | | 8 | Surin | 354,921 | | 9 | Nakhon Si Thammarat | 344,621 | | 10 | Roi Et | 343,625 | | | Whole Kingdom | 13,751,833 |
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