The state's business lobby has called for the electrical union to come to the negotiating table as Western Power workers planned a 48 hour strike action this week.
Western Power estimates the price tag of union requests in a worsening industrial dispute could be $31 million a year, with a further work stoppage looming next week.
Australia Post's directors have railed against claims privatising parcel deliveries was considered as pressure increases for the entire board to be sacked.
