Temporary help agencies are among the largest employers of American workers today. Depending upon the interpretation, the Bureau of Labor Statistics counts between 3 and 30 million Americans in contingent and part-time work arrangements. We model firms' use of contingent labor in maximizing...

We consider the problem of scheduling a project when there is an adversary from whom you want to conceal the project’s progress. Interfering with the progress by the adversary is called interdiction. Interdiction may involve hiring away key employees, campaigning for a change in zoning laws,...