United has been working steadily the last couple weeks to reach concession agreements with its unions.
But if pushed to make too far reaching concessions, some observers warned, Mr. Netanyahu could also face a rebellion within his own conservative-leaning party, Likud.
The chain has also reached concession agreements at a number of stores with the womenswear group Quiz and denim specialist Ruby London.
We negotiated with... the police and fire unions, without success, attempting to reach voluntary concessions, and we tried in vain to persuade our retirees to accept voluntary reductions in their benefits," Flanders said.
Mr. Siegel had said he wants to reach agreements on concessions by June 15, and several unions said they were working to meet that deadline.
The goal of the summit meeting in June is to reach agreement on concessions intended to tempt Ireland to hold a second referendum on an ambitious pact known as the Lisbon Treaty.
The agreement came after union leaders said they had told executives that workers were resisting tentative agreements on concessions reached March 31.
Concessions reached a peak after a crucial rail link through Vichy France was severed in 1942, leaving Switzerland completely surrounded by the Axis.
Outside pressure on Greece was mounting to reach an agreement on concessions.
And each step is a further prod for Google to make concessions to reach a settlement before going to court.
