 Let "w" denote the hourly wage, "k" denote total hours available for labour and leisure, "L" denote the chosen number of working hours, π denote income from non-labour sources, and "A" denote leisure hours chosen.The individual's problem is to maximise utility "U", which depends on total income available for spending on consumption and also depends on the time spent in leisure, subject to a time constraint, with respect to the choices of labour time and leisure time