The seven days are to be scattered over two weekends, one of them being the UK bank-holiday – a popular time for family holidays in Europe.
The RMT Union have confirmed that staff will walk out from 00:01 on 12 August until 23.59 BST on 15 August, and for three days over the UK Bank Holiday weekend from 27 August.
The RMT stated that Eurostar have failed to honour an agreement made in 2008 over conditions for their staff.
RMT general secretary Mick Cash said: "Our train manager members at Eurostar have a heavy commitment to shift work and unsocial hours and are sick and tired of the company's failure to honour agreements.
"Our members have every right to have a fair work-life balance that fulfils the operational needs of the company while guaranteeing quality time off for friends and family.
"It's now time for Eurostar to come to the negotiating table with a set of proposals that honours our agreements and guarantees our members a genuine work-life balance."
However, Eurostar have said all passengers with reservations will still be able to travel.
A spokesman for Eurostar told us: "All customers that are scheduled to travel will be able to, and rather than being delayed, anyone on one of very few cancelled trains will be notified in advance so that they can rebook for free onto another service."
Lets hope the two make an agreement pretty soon. In the meantime, make sure you check before you travel.
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