Lydia currently earns 8,600 per year (same amount after income tax and national insurance) and Patrick, 20,000 (17,135.84 after tax and national insurance). If Lydia takes the full-time job (which involves changing role), her gross earnings will increase to 18,000 (15,775.84 after tax and national insurance). Lydia also receives child benefit for Nina, equating to 1076.40 per year.

Question:

Using the concept of opportunity cost, identify two factors that might cause Lydia to have a much larger financial loss over her lifetime if she carries on working part-time for another 3 years than if she chooses to move full-time now.