Economics is not only a social science, it is a genuine science. Like the physical sciences, economics uses a methodology that produces refutable implications and tests these implications using solid statistical techniques. In particular, economics stresses three factors that distinguish it from...

What happens when a firm switches from paying hourly wages to paying piece rates? The theory developed below predicts that average productivity rises, that the firm will attract a more able work force and that the variance in output across individuals at the firm will rise as well. The theory is...

Hiring is positively correlated with separation, both across firms and over time. A theory of hiring and separation based on shifts in demand implies the opposite. One firm or industry hires and grows when another fires and contracts. But hiring for expansion and layoff for contraction comprises...

Success of immigrants in the US, measured by earnings or education, varies dramatically by country of origin. Surprisingly, immigrants from Algeria have higher educational attainment than those from Israel or Japan. Another fact: The US admits few migrants from Algeria. Immigration slots are...

Most turnover reflects churn, where hires replace departures. Churn varies substantially by employer, industry and worker characteristics. For example, leisure and hospitality turnover is more than double that of manufacturing. In the LEHD (QWI) data, permanent employer differences account for...

A model of hiring into posted job slots suggests hiring is based on comparative advantage: being hired depends not only on one's own skill but also on the skills of other applicants. The model has numerous implications. First, bumping of applicants occurs when one job-seeker is slotted into a...

With the growth of the literature on incentive compensation has come the belief by some that incentive pay may be less rigid than pay that is not designed to effect incentives. Some have gone so far as to argue that this may explain differences in unemployment rates across countries. it is shown...

Job changes often occur without spells of unemployment. Highly educated workers, for example, rarely suffer unemployment, even though job changes are common. A large proportion of their job switches occur only after the new job is secured. These workers, whose skills and ability levels are less...

Individuals involved in basic research, like other workers, respond to incentives. Funding agencies provide implicit incentives when they specify the rules by which awards are made. The following analysis is an exercise in understanding incentives at an applied level. Specific rules are examined...

Excessive layoffs in bad times and excessive quits in good times both stem from the same weakness in practical employment arrangements: the specific nature of worker-firm relations creates a situation of bilateral monopoly. Institutions which have arisen to avert the associated inefficiency...