The official acceptance of the new enterprise bargaining agreement, which will be in place until October 2020, came after repeated industrial action by staff, including bus drivers, who offered free travel to commuters.

After an independently administered council-wide vote, which was finalised on Friday, 89 per cent of all employees who had their say voted to support the EBA.

The agreement includes a $500 one-off sign-off payment for staff, and annual 2.5 per cent pay rises.

Brisbane City Council reached a wage deal with drivers in September.

Brisbane Lord Mayor Graham Quirk said in February that the civic cabinet approved an automatic 2.5 per cent wage increase, "as it was clear that EBA negotiations were still some time from being finalised".

Cr Quirk said that, under the agreement, Brisbane bus drivers would be among the best paid in the country.

"Under the agreement, council agreed to a number of changes for bus drivers, including easier career progression and regular meetings of the bus design and safety committee," he said.

Unions had previously campaigned for a salary increase of 3.5 per cent over three years, as well as an $800 signing bonus.