Why do some people refuse to work overtime?

	a.	They do not believer in the substitution effect.
	b.	Canada's tax system decreases the price of leisure.
	c.	They feel they should get paid time and a half and they don't.
	d.	A person's marginal tax rate decreases as their income increases.

Which of the following statements about marginal tax rates is not correct?

	a.	High marginal tax rates reduce the price of leisure.
	b.	With a progressive tax structure, marginal tax rates increase as incomes increase.
	c.	If one's income is taxed at 30%, the person's marginal tax rate is also 30%.
	d.	If everyone paid 10% of their income in taxes, the marginal tax rate would be 10%.