The evolution of technology causes human capital to become obsolete. We study this phenomenon in an overlapping generations setting, assuming that technology evolves stochastically and that older workers find updating uneconomic. Experience and learning by doing may offer the old some income protection, but technology advance always turns them into has‐beens to some degree. We focus on the determinants (demand elasticities, persistence of technology change, etc.) of the severity of the has‐beens effect. It can be large, even leading to negatively sloped within‐occupation age‐earnings profiles and an occupation dominated by a few young, high‐income workers. Architecture displays the sort of features the theory identifies as magnifying the has‐beens effect, and both anecdotes and some data suggest that the has‐beens effect in architecture is extreme indeed.

In a sample of California hospitals, we find that the composition of the board of directors varies systematically across ownership types. For all ownership types, except government-owned, we find that poor financial performance is related to board and CEO turnover. However, different ownership types place different weights on levels of charity care and administrative expenses. Our overall findings support the proposition that ownership type reflects heterogeneity across consumers and producers, and that differences in these groups lead to differences in the organization's objectives and governance.

We model a firm's demand for liquidity to develop a new test of the effect of financial constraints on corporate policies. The effect of financial constraints is captured by the firm's propensity to save cash out of cash flows (the cash flow sensitivity of cash ). We hypothesize that constrained firms should have a positive cash flow sensitivity of cash, while unconstrained firms' cash savings should not be systematically related to cash flows. We empirically estimate the cash flow sensitivity of cash using a large sample of manufacturing firms over the 1971 to 2000 period and find robust support for our theory.