Millions of people will get the right to request flexible working hours under plans the Government hopes will particularly help older workers.
Previously the right was only available to carers or those looking after children, but it is now being extended to all employees.
Under the reforms employers will be obliged to deal with the requests in a "reasonable manner".
Industrial conciliation service Acas has also published a code of practice to help employers understand the new rights and how to process requests for flexible hours.
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