| PD | Pending |
| SC | Settled Amicably |
| AJ | Assumed Jurisdiction |
| BD | Bargaining Deadlock |
| ACA | Agreed for Compulsory Arbitration |
| CCA | Certified for Compulsory Arbitration |
| RCA | Referred to Compulsory Arbitration |
| SVA | Submitted to Voluntary Arbitration |
| RRO | Referred to Regional Offices |
| RGM | Referred to Grievance Machinery |
| LMC | Agreed to Labor Management Cooperation |
| TPM | Treated as Preventive Mediation |
| LOI | Lack of Interest |
| WBF | Withdrawn by Filler |
| MAS | Materialized into Actual Strike/Lockout |
| MSN | Materialized into Notice of Strike/Lockout |
| OS | Others; Closure |