| Self | Private | Public | |
| Log of hours | 0.053 | 0.091 | 0.295 |
| (0.204) | (0.098) | (0.478) | |
| Tenure | 0.103*** | 0.045 | −0.026 |
| (0.038) | (0.035) | (0.025) | |
| Tenure2 | −0.004** | 0.000 | 0.001 |
| (0.001) | (0.001) | (0.001) | |
| Primary | −0.008 | 0.416** | −0.534 |
| (0.147) | (0.173) | (0.418) | |
| Secondary | 0.472** | 0.900*** | 0.000 |
| (0.227) | (0.181) | (0.379) | |
| Tertiary | 1.413 | 1.487*** | −0.211 |
| (1.125) | (0.208) | (0.450) | |
| Sex | 0.488 | 0.307** | −0.029 |
| (0.319) | (0.152) | (0.231) | |
| Firm size |
| 0.004* | |
|
| (0.002) | ||
| Accra | −0.224 | 0.042 | −0.050 |
| (0.230) | (0.162) | (0.223) | |
| Selection correction term | 0.182 | −0.072 | 0.890* |
| (0.210) | (0.385) | (0.536) | |
| Year dummies | Yes | Yes | Yes |
| Constant | 2.918*** | 2.451*** | 4.545* |
| (1.042) | (0.899) | (2.530) |