  This talk presents results of the two independent analyses evaluating the
measurement accuracy of the branching ratio for the Standard model Higgs boson
decay to a W-pair, at the Compact Linear Collider (CLIC) and at the
International Linear Collider (ILC). The considered Higgs production channels
are the WW-fusion for the highest energy stage of CLIC, $\sqrt{s}$= 3 TeV, and
the Higgsstrahlung process for the nominal ILC energy, $\sqrt{s}$=500 GeV. Both
studies are performed using the full simulation of the detector. The realistic
experimental conditions have been simulated including beam energy spectrum,
initial state radiation and the backround from $\gamma\gamma\rightarrow
hadrons$ processes, which are overlaid on simulated events. The multivariate
analysis technique is used for the final event selection and the expected
relative statistical uncertainty, $\Delta (\sigma \cdot BR) / (\sigma\cdot
BR)$, of the measured Higgs production cross sections is estimated.
