For general information on holiday and holiday pay, see Practice Notes: • Holiday • Holiday pay As 'workers' under the Working Time Regulations 1998 (WTR 1998), SI 1998/1833, zero hours employees and workers have the right to 5.6 weeks' paid statutory holiday per leave year (WTR 1998, SI 1998/1833, regs 13, 13A and 16. There are no special provisions dealing with the statutory holiday entitlement of a worker with a casual work or zero hours contract, ie a contract where the employer is not obliged to provide the individual with any work. Zero hours employees and workers are treated as part-time workers, and so will usually be entitled to a pro-rated amount of holiday. However, because zero hours workers work irregular hours, and the legislation deals with entitlement in terms of weeks, it can be difficult to calculate their holiday entitlement and to calculate