p. 661 678). An assumption of implicit lifetime contracts may be more difficult to justify in the case of non union firms; nevertheless, such an assumption may be made in relation to some non union firms. Further, it is possible that the authors' hypothesis may be more appropriate for non union firms, because hours of work are less flexible under most collective bargaining agreements (Altonji and Paxson, 1988, pp. 254 276).
A strength of the article was that the authors sought alternative explanations for their findings when the two tested models failed to provide such explanations (Kahn and Lang, 1992, pp. 661 678). Unfortunately, the potential alternative explanations were not sufficiently strong, and Kahn and Kevin Lang (1992, pp. 661 678) were compelled to recommend further research to develop conclusive findings relative to their hypothesis.
Kahn, Shulamit, & Lang, Kevin. (1992). Constraints on the choice of work hours. The Journal of Human Resources, 27(4), 661 678.
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