Wood Group offshore workers launch 48-hour strike in row over pay
The Unite union said workers had faced the threat of fire and rehire notices and of having their pay cut.
Offshore workers on a number of North Sea platforms are taking strike action in a dispute over pay and conditions.
The Unite and RMT unions said they are in dispute with the Wood Group over its decision to "slash" the pay and conditions of dozens of offshore workers, including through the threat of issuing fire-and-rehire notices.
The strikes will affect a number of installations run by Harbour Energy, including the Britannia, Jasmine, Judy, Lomond and North Everest platforms.
The Wood Group said it had been notified of the action and added that staff and operational safety remained its "top priority".
Production, instrument and mechanical technicians are among those set to walk out for a total of six days in October and November, beginning with a two-day walk-out which started at midnight.
Further walkouts are expected on 20 and 21 October and 3 and 4 November.
The RMT has also instructed its members not to work any overtime from 8 October until further notice.
The news comes after a warning that separate strike action by offshore workers at energy firm Apache could "severely disrupt" UK fuel supplies.
Unite general secretary Sharon Graham said: "Unite will not allow the Wood Group to slash and burn our members' pay and conditions.
"This is a profitable company and it is despicable that it is threatening to fire and rehire its workers. This is corporate greed in its worst form."
Vic Fraser, Unite industrial officer, said: "Industrial action will inevitably impact the operation of Harbour Energy's offshore assets.
"The workforce has been left with no option but to strike against the Wood Group's threats and intimidation.
RMT general secretary Eddie Dempsey said: "Our members are not asking for special treatment or unreasonable improvements.
"They are standing up to defend the terms and conditions they already have.
"Strike action is always a last resort, but our members have clearly shown that they are prepared to stand together to defend their livelihoods and the terms and conditions they have worked under for many years.
"Furthermore, instead of working with the union to resolve these issues, the company has inflamed the situation by threatening the use of fire-and-rehire tactics."
A Wood Group spokesperson said: "We have received notification of planned industrial action involving union members employed by Wood on one of our Harbour Energy contracts.
"This is in relation to a recent consultation on changes to employment terms and conditions with employees.
A Harbour Energy spokesperson said: "We are aware of discussions between Wood and its employees and we hope a constructive resolution can be reached.
"We continue to work closely with all our contractors and expect to maintain safe and reliable operations and production across our business."
