A person is employed if working for pay, profit or family gain for at least one hour per week, even if temporarily absent from work because of illness, holidays or industrial disputes. The data from labour force surveys of OECD countries rely on this work definition during a survey reference week. The basic indicator for employment is the proportion of the working age population aged 15-64 who are employed. These employment rates are presented by age, gender, educational attainment and migrant status. Temporary employees are wage and salary workers whose job has a pre-determined termination date as opposed to permanent employees whose job is of unlimited duration. National definitions broadly conform to this generic definition, but may vary depending on national circumstances.