A business has a panel of employees on temporary contracts, which specify that the employer is not obliged to offer work and the employee does not have to accept work offered. The panel of employees are contracted as needed. My question is in relation to which employees should be offered work when the need arises. Should this be done on a “rolling” basis, and should it be based on the start date or length of service actually worked? For example, if employee A starts in January and works two months, and employee B starts in February and works six months, which employee should be offered work when next required?