John Lewis is preparing for any strikes in the run-up to Christmas
John Lewis has announced that it is working with other carriers in order to avoid disruption to its online deliveries from any Royal Mail strike.
"We have ensured that postal strikes don't affect our customers by switching the business to other carriers," the company said.
Last week, Royal Mail postal workers voted in favour of strike action over job security and working conditions.
Online retailer Amazon has also said it is working with other carriers.
"We work with a number of different carriers for contingency to provide an uninterrupted service," John Lewis said in a statement.
"Contrary to concerns in the press about the situation leading to an increase in online prices, we will not put our prices up as a result of this strategy."
On Thursday, Royal Mail workers voted three to one in favour of industrial action.
The Communication Workers Union would have to give seven days' notice of any strike action.
The last time there was a national postal strike was in 2007.