Read the following paragraph. What topic connects the two underlined sentences?

The use of part$-$time employees makes it much easier for a company to schedule workers around peak periods of demand, and it creates a larger employment pool upon which to draw. For example, Federal Express Corporation accommodates wide daily swings in work volume at its Memphis, Tennessee, branch by$.$ using only$\_$part$-$time employees below the level of supervisor. And at Novations, Inc., a management$-$skills assessment company, almost all test scoring is done by part$-$time subcontractors, at times including up to $40$ or $50$ subcontractors, depending on the company's needs.

Kenneth Blanchard et al$.,$ Exploring the World of Business

pay rates

examples of companies using part$-$time employees

Federal Express Corporation

Novations, Inc.