If you're planning to help out with childcare and still working, you might have to consider how you can balance the two.  In June 2014, the government extended the legal rights to request flexible working hours to all employees, including grandparents. To qualify, employees must have worked for the same employer for at least 26 weeks, and while you have the right to ask for flexible working, it is up to your employer whether or not to grant it.  Employers must deal with requests in a ‘reasonable manner’ and can only refuse for good business reasons. They should usually make a decision within three months of the request. You can find more information about flexible working here.

Whatever change you're thinking about making, you should make sure you've thought through any financial impact it's going to have, especially if you're considering reducing your hours.