“There’ll be no industrial action today,” the head of the UFO labour union Nicoley Baublies told AFP.
“We’ll strike tomorrow at the earliest.”
The timing and extent of the walkouts would be annouced late Wednesday, he added.
Unions have held off from taking strike action while last-ditch wage negotiations were still underway, but with no breakthrough in the deadlocked talks overnight Monday, the UFO labour union declared the negotiations as failed and called for immediate walkouts.
Extended industrial action could prove costly for the airline, which already faces strong headwinds from rising kerosene prices and fierce competition.
Lufthansa shares were the biggest losers on the Frankfurt stock exchange again early on Wednesday, shedding 1.2 percent to 9.72 euros in a stable market.
The union is seeking a 5.0-percent pay increase for cabin staff for 15 months starting from January this year after three years of zero increases.
It is also opposed to the use of temporary cabin staff in Lufthansa aircraft.
Lufthansa’s latest offer was for a pay increase of around 3.5 percent.