Stockholm, Södertälje and Umeå have been affected since the start of the strike on 19 June. As of today, Kommunal union members in an additional seven cities, Strängnäs, Halmstad, Västerås/Hallstahammar, Norrköping, Jönköping, Gävle and Östersund, are striking.
If a deal is not struck by the end of the week, the strike will be further intensified on Saturday, 29 June. Kommunal has warned it will then pull another 1,400 employees.
That would bring large parts of Stockholm's bus traffic to a standstill, including airport coaches.
In addition to wages, Kommunal has said the key issues for their members are the length of breaks, the ability to rest for a full day and protection from being sacked if a new bus company takes over bus traffic operations.