If you request multiple blocks of leave in a single written notice, your employer can say no. But if you ask for a single period of leave in each notice, they can’t say no and you have the right to submit up to three notices as long as you follow the rules.
If you request multiple blocks of leave in a single notice and your employer says no, they can’t stop you taking leave altogether. What usually happens is that you get to take the total amount of leave you requested in the notice as a single block (unless you withdraw the original notice and start again).
There is more advice about requesting multiple blocks of leave on the SPLASH website, a portal developed for employees and employers by specialist charities and legal experts to help navigate around shared parental leave regime.
Leave can only be taken in blocks of a working week. Odd days are not allowed.