Clegg has said that he had considered extending paternity leave from the current two weeks, but concern had been voiced within Government and from business groups about the cost.
Flexible leave will be reviewed by 2018, when extending paternity leave will be looked at, Mr Clegg is expected to announce.
These are major reforms and, at a time of continuing economic difficulty, it's sensible to do them in a number of steps, rather than one giant leap. More and more men are taking on childcare duties, or want to, and flexible leave builds on that.
More top news
At least 27 high-rise blocks of flats in 15 local authority areas have failed fire cladding safety tests, the Government has announced.
New Zealand have beaten the British and Irish Lions 30-15 in the first Test in Auckland.
The company said its role was not to decide what was or was not compliant with local building regulations.