Canada Post said Thursday it was reviewing new counter-proposals submitted by the union representing more than 55,000 postal employees, who walked off the job three weeks ago.

The sticking points include wages and a push to expand into weekend delivery, with the two sides in disagreement over how to staff the expansion.

Calls for federal intervention have been mounting from the business community, but so far the government has said it’s not stepping in.

Canada Post handled 296 million parcels last year, or nearly 811,000 per day. That’s a big hole for private operators to plug, even if it represents just 29 per cent of the parcel market, according to the Crown corporation.