| 3825 | Paper tape reader, input device, manufacturing | |
| 3419 | Paper tissue, cleansing or facial, manufacturing from stock | |
| 3824 | Paper tube machine manufacturing | |
| 3215 | Paper twine manufacturing | |
| 3419 | Paper varnishing | |
| 3211 | Paper yarn weaving | |
| 3411 | Paper, except asphalt or tar, abrasive, carbon and photographic, manufacturing | |
| 3411 | Paper, tissue, stock, manufacturing | |
| 6100 | Paper, waste, dealing | |
| 3411 | Paperboard manufacturing | |
| 3411 | Paperboard, patent-coated, manufacturing | |
| 5000 | Paperhanging | |
| 3419 | Papetery manufacturing | |
| 3419 | Papier mache articles, except statuary and art goods, manufacturing | |
| 3212 | Parachute cutting and sewing | |
| 3530 | Paraffin wax manufacturing | |
| 3511 | Paraldehyde manufacturing | |
| 3909 | Parasol covering manufacturing | |
| 3909 | Parasol manufacturing | |
| 9519 | Parasol repairing | |
| 3909 | Parasol trimming, excluding gold or silver, manufacturing | |
| 9599 | Parcel checking concession | |
| 7114 | Parcel delivery by truck | |
| 3116 | Parched gram manufacturing | |
| 3909 | Parchment lamp shade manufacturing | |
| 3411 | Parchment paper manufacturing | |
| 3512 | Paris green, insecticide, manufacturing | |
| 3220 | Parka cutting and sewing | |
| 5000 | Parking area construction | |
| 7116 | Parking facility operation | |
| 7116 | Parking lot operation | |
| 3851 | Parking meter manufacturing | |
| 5000 | Parkway construction | |
| 9100 | Parliament | |
| 7111 | Parlour car service operated by railroad | |
| 9310 | Parochial school | |
| 5000 | Parquet flooring contractor | |
| 3311 | Parquet flooring manufacturing | |
| 3121 | Parsley dehydrating | |
| 3560 | Part and accessory made of plastic, motor vehicles, manufacturing | |