Schedule 1
| Activity | Specified Authorities | ||
|---|---|---|---|
| Authorities mentioned in article 4(a) | Authorities mentioned in article 4(b) | Authorities mentioned in article 4(c) | |
| Cleaning | 1 August 1991 | 1 August 1992 | 1 January 1992 |
| Catering | 1 January 1992 | 1 August 1991 | 1 August 1992 |
| Vehicle maintenance | 1 August 1992 | 1 January 1992 | 1 August 1991 |