Both mandatory vs discretionary spending come into play in cash jobs in the United States. Mandatory spending refers to obligatory payments that a worker must make, such as taxes and social security contributions. On the other hand, discretionary spending covers variable costs like personal or household expenses. When a worker takes on a cash job, he or she has more control over discretionary spending because this type of job typically provides an instant cash flow. However, missing out on mandatory contributions can lead to legal issues in the long run, emphasizing the importance of responsible financial management.