| Abbreviation | Definition |
|---|---|
| DRA | Design Risk Assessment |
| DRCA | Disaster Recovery Contractors Association |
| DSEC | De Smet Engineers Contractors |
| EACA | Exhibitor Appointed Contractor Association |
| EACA | Exhibitor Appointed Contractors Association |
| ECA | Eastern Contractors Association |
| ECA | Electrical Contractors Association |
| ECA | Engineering Contractors Association |
| ECAA | Electrical Contractors Association of Alberta |
| ECAO | Electrical Contractors Association of Ottawa |
| ECBA | Electrical Contractors Business Association |
| ECCS | East Coast Construction Services |
| ECLB | Electrical Contractor Licensing Board |
| ECLB | Electrical Contractors Licensing Board |
| ECMRA | Enterprise-Wide Contractor Manpower Reporting Application (US DoD) |
| ECOPS | European Contractor Online Processing System |
| ECS | Employment Contractor Services |
| EDRS | EFET Documentation Ratification System |
| EEC | Equity Eligible Contractor |
| EFCB | Egyptian Federation for Construction and Building. |