| to obtain certification | 37 | purpose |
| often | 35 | temporal |
| to work | 34 | purpose |
| employer → require → employee | 1663 |
| employer → require → the employee | 498 |
| employer → required → employee | 10 |
| employer → require → its employee | 9 |
| employer → require → that employee | 7 |
| employer → require → their employee | 4 |
| negative | neutral | positive |
| 0.234 | 0.720 | 0.046 |
| Raw frequency | 2191 |
| Normalized frequency | 0.890 |
| Modifier score | 0.603 |
| Perplexity | 156.547 |