First Minister Nicola Sturgeon will personally intervene today in a bid to stop waves of strike action among council workers.
She will meet trade unions and council chiefs separately as schools prepare to close as a result of the dispute. The talks will take place at St Andrews House in Edinburgh.
Bin workers were the first to strike last month after discussions with council umbrella body COSLA failed to lead to an agreement. Both the 3.5 per cent and 5 per cent offers were rejected, as was a revised proposal which would have given a £1925 minimum to staff.
Disruption is likely to return next week - and spread to schools - if a new offer is not accepted by the unions.
The latest offer, made by local authority body Cosla on Monday, was rejected as unions urged Cosla to make a flat-rate pay offer as opposed to one based on a percentage increase to current wages.
According to the Scottish Government, the deal included a payment of at least £1,925 for council staff, with those earning £20,000 receiving £2,000.
But Unite said the payment could be as low as £989 for some employees, with 85% receiving between £1,925 and £2,000, and any payment would not be recurring.
Sturgeon has said all options in making more funding available amid the strikes have been "exhausted".
With the latest offer being turned down, waste workers look set to be joined by school support staff, including cleaners, caterers, janitors and pupil support assistants in action set to take place next week.
Hundreds of schools will close as a result of the action across the country for three days.
Meanwhile, clean-up operations have begun as local authority waste staff across Scotland return to work, bringing an end to the first wave of strike action.
Workers from the Unite, Unison and GMB unions walked out as part of a dispute over pay as negotiations failed to reach an acceptable settlement.
The action coincided with a similar strike in Edinburgh that left the streets littered with rubbish during the Edinburgh Festival Fringe.
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