Drivers for First Bus in Edinburgh rejected an offer of £8 an hour by a vote of 61 percent last week.
The offer came as the drivers were set for a seven day strike from Monday 3 October, when they received the offer of £8.
The union recommended that the drivers, who currently earn between £7.25 and £7.40 an hour, accept the deal.
Drivers in the west of Scotland accepted the deal while drivers in the east, which includes the Edinburgh drivers, rejected the offer. They argue that the rate in Edinburgh, one of Britain’s most expensive cities, should be £9 an hour.
First Bus has since put forward a revised offer that the 350 drivers were set to vote on Wednesday of this week.
If the offer is rejected the drivers, members of the T&G union, will stage a week long strike from Monday next week.