What is a workforce agreement on holiday?

A workforce agreement is an agreement between an employer and its workers regarding the application of certain provisions in the Working Time Regulations 1998 (SI 1998/1833), for example the timing of annual holiday and the method for calculating accrued holiday pay. The agreement must be in writing, must have effect for a specified period (not exceeding five years) and must apply either to all members of the workforce or to all members of the workforce who belong to a particular group - excluding workers whose terms and conditions of employment are provided for in a collective agreement.