Do you know anyone who “intertemporally substitutes” their labor? In other words, what are some careers where someone might choose to work more during times when the wage is higher but less when the...

Do you know anyone who “intertemporally substitutes” their labor? In other words, what are some careers where someone might choose to work more during times when the wage is higher but less when the wage is lower? (Example: someone with a lawn-mowing business.) Think of three examples of such careers. (Hint: Seasonal jobs provide a lot of easy examples.)