In this subtitle:
| NAICS Sector # | Description |
| 111 | Crop Production |
| 112 | Animal Production |
| 113 | Forestry and Logging |
| 11411 | Commercial Fishing |
| 115 | Support Activities for Agriculture and Forestry |
| 211-213 | Mining |
| 221 | Utilities |
| 311-339 | Manufacturing |
| 42 | Wholesale Trade |
| 48-49 | Transportation and Warehousing |
| 51 (excluding 512131 and 512132) | Information (excluding motion picture theaters and drive-in motion picture theaters) |
| 523-525 | Securities, Commodity Contracts, and Other Financial Investments and Related Activities; Insurance Carriers and Related Activities; Funds, Trusts, and Other Financial Vehicles |
| 5413, 5415, 5416, 5417, and 5419 | Architectural, Engineering, and Related Services; Computer System Design and Related Services; Management, Scientific, and Technical Consulting Services; Scientific Research and Development Services; Other Professional, Scientific, and Technical Services |
| 551 | Management of Companies and Enterprises |
| 56142 | Telephone Call Centers |
| 922140 | Correctional Institutions; or |
Tex. Loc. Gov't. Code § 501.002