| Administrator: | Test and County Cricket Board |
| Cricket Format: | Limited overs cricket(40 overs per innings) |
| Tournament Format: | League |
| Champions: | Worcestershire |
| Count: | 3 |
| Participants: | 17 |
| Matches: | 136 |
| Most Runs: | 573 David Turner (Hampshire) |
| Most Wickets: | 28 Ian Greig (Surrey) |
| Previous Year: | 1987 |
| Previous Tournament: | 1987 Refuge Assurance League |
| Next Year: | 1989 |
| Next Tournament: | 1989 Refuge Assurance League |
The 1988 Refuge Assurance League was the twentieth competing of what was generally known as the Sunday League. The competition was won for the third time by Worcestershire County Cricket Club.
| width=200 | Team | width=20 | Pld | width=20 | W | width=20 | T | width=20 | L | width=20 | N/R | width=20 | A | width=20 | Pts | width=60 | R/R |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Worcestershire (C) | 16 | 12 | 0 | 3 | 0 | 1 | 50 | 5.096 | |||||||||
| 16 | 10 | 0 | 4 | 0 | 2 | 44 | 5.246 | ||||||||||
| 16 | 10 | 0 | 4 | 1 | 1 | 44 | 5.113 | ||||||||||
| 16 | 9 | 0 | 3 | 3 | 1 | 44 | 4.927 | ||||||||||
| 16 | 8 | 1 | 5 | 1 | 1 | 38 | 4.794 | ||||||||||
| 16 | 8 | 1 | 5 | 1 | 1 | 38 | 5.088 | ||||||||||
| 16 | 7 | 0 | 6 | 1 | 2 | 34 | 4.807 | ||||||||||
| 16 | 7 | 0 | 7 | 1 | 1 | 32 | 4.862 | ||||||||||
| 16 | 7 | 0 | 8 | 0 | 1 | 30 | 4.67 | ||||||||||
| 16 | 6 | 1 | 8 | 0 | 1 | 28 | 4.748 | ||||||||||
| 16 | 6 | 0 | 8 | 0 | 2 | 28 | 4.377 | ||||||||||
| 16 | 5 | 1 | 8 | 2 | 0 | 26 | 4.832 | ||||||||||
| 16 | 6 | 0 | 9 | 0 | 1 | 26 | 4.943 | ||||||||||
| 16 | 4 | 0 | 9 | 1 | 2 | 22 | 4.312 | ||||||||||
| 16 | 4 | 0 | 9 | 1 | 2 | 22 | 4.57 | ||||||||||
| 16 | 4 | 2 | 9 | 0 | 1 | 22 | 4.573 | ||||||||||
| 16 | 3 | 0 | 11 | 0 | 2 | 16 | 4.752 | ||||||||||
| Team marked | |||||||||||||||||