Tata Steel has termed the ballot results "disappointing" and said that the firm will soon announce new measures to lessen the impact of the proposed changes in pension scheme.
"Members of Britain's largest union, Unite, working for Tata Steel UK have overwhelmingly voted for industrial action over the company's plans to close the BSPS and make employees work five more years to get their full pension," a Unite spokesperson told PTI.
Other three unions had already voted in favour of a strike action against the steel giant last month.
All four unions together represent a large chunk of Tata Steel's 17,000 employees in the UK.
Also Read
The National Trade Union Steel Co-ordinating Committee -- which brings together Community, Unite, GMB and UCATT unions -- is scheduled to meet next week on Monday to determine the next stage of action.
The members will deliberate on whether to go for a 'strike' or a 'short of strike' action. If the unions decide to go for a strike or short of strike, they will have to give 7 days notice to the company.
Tata Steel has over the last few months listened carefully to the employees during a consultation process, he added.
The firm has held "face-to-face pension roadshows" with 5,000 employees and has received 4,000 letters and emails.
"In response to this feedback, we will soon be announcing new measures which will lessen the impact of the proposed pension changes, particularly on our longest-serving employees nearing retirement age.
"We hope that these important changes to our proposals will be welcomed by employees and the trade unions and that they will consider this when deciding on any industrial action," the spokesperson said.