The Rail, Maritime and Transport (RMT) union has called off a 48-hour strike planned by construction and maintenance workers on London Underground after agreeing a deal with Transport for London (TfL).
RMT had feared for the security of its members' jobs after private sector contractor Tube Lines was bought back into public ownership by TfL last month.
Union officials have now secured a 4.2% pay rise and reached agreement on job protection, which RMT members will vote on.
General secretary Bob Crow said: “The deal will deliver an immediate 4.2% along with inflation-busting increases for the following two years.
"Once again, RMT members have shown that if you are prepared to stand together and take action in defence of pay, jobs and working conditions you can win."
A TfL spokesman said: "The pay offer accepted by the RMT at Tube Lines is entirely consistent with those already accepted by the union at London Underground and Transport for London last year, when staff and unions accepted 1.5% in 2009, followed by RPI plus 0.5% this year and next.
"This was an existing dispute between Tube Lines and the RMT about pay and conditions, not over the transfer of Tube Lines to TfL.”