Health secretary Alan Johnson planned to announce the proposals in a speech about health and wellbeing at work in London this week.
Mr Johnson was expected to say: 'Ten years ago we started the debate on work-life balance. Now the time has come to talk about work-health balance.
'Incapacity benefit should not be a one-way street that starts in the GP's surgery and stops at the dead end of a lifetime on benefits,' he added.
'The evidence shows that far from being bad for health, work is generally good for people's health.'
Dr Peter Holden, a GPC negotiator, said: 'GPs should not be there to police the system.'
The health secretary will be speaking before the publication of a report by Dame Carol Black, the government's national director for health and work, which will outline the proposals.
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