The CEO of St. John's airport is calling on striking PSAC workers to return to the bargaining table.

Keith Collins says officials have yet to hear from the union since an offer was made on Nov. 21.

"This was a significant proposal, with movement on all major outstanding monetary and non-monetary issues," Collins said during a news conference Friday.

"To date, the authority has received no response at all from the union."

Collins said the airport authority has formally invited the union back to negotiations on Dec. 18.

He said management is willing to be flexible, but not on the issue of St. John's workers getting the same pay as airport workers in Halifax.

The union has said it is preparing a response.

Eighty-five maintenance workers have been off the job since the strike began on Sept. 11.

Their last contract expired in 2009.