A comprehensive workplace intervention and its outcome with regard to lifestyle, health and sick leave: the AHA study

This study is a prospective multicentre cohort study entitled Work and Health in the Processing and Engineering Industries, the AHA Study (AHA is the Swedish abbreviation for the study). Four large workplaces in Sweden participated during the years from 2000 to 2003. The present report has two objectives: (1) to present a comprehensive occupational health intervention programme and (2) to evaluate this programme with a focus on lifestyle (smoking and exercise), health related quality of life (HRQoL) and sick leave. Interventions were provided on an individual and group level, including evidence-based methods for four health/focus areas (individual level) and a group intervention based on a survey-feedback methodology. The analyses in this report were exclusively employed at an organizational level. The proportion of smokers decreased at three companies and the course of the HRQoL was advantageous at two of the companies as compared to a gainfully employed reference group. A significant decrease in sick leave was revealed at one company, whereas a break in an ascending sick-leave trend appeared at a second company as compared to their respective corporate groups. This comprehensive workplace intervention programme appears to have had positive effects on smoking habits, HRQoL and sick leave.     

Unemployment and marital dissolution

This paper analyses the effects of unemployment on the probability of marital dissolution. Based on panel data for a sample of Danish married couples, we estimate a dynamic model for the probability of marital dissolution where we take into account the possible effects of unemployment for both spouses. We also control for other factors such as education, age, presence of children, place of residence, health and economic factors. The empirical results show that unemployment seems to be an important factor behind marital instability. However, only unemployment of the husband has an effect, and this effect is immediate.We thank two anonymous referees for their helpful comments on an earlier draft.     

Will workfare work? Job availability for welfare recipients in rural and urban America

Ongoing concern over welfare dependency has stimulated the US Government to enact welfare reform legislation that features work requirements. Under the Personal Responsibility and Work Opportunity Reconciliation Act of 1996, millions of able-bodied welfare recipients will now be expected to find work within two years. We analyze data from the March 1994 Current Population Survey to address the neglected question of whether a sufficient number of jobs will be available for those looking for work. Using two methods to estimate job availability, and a variety of assumptions about which welfare recipients will be required to work, we estimate that as few as 18 and as many as 54 welfare recipients and other unemployed individuals would be competing for each available job. Separate analyses by residence provided equivocal evidence on whether metropolitan or nonmetropolitan welfare recipients will have the more difficult time finding gainful employment.     

Build-operate-transfer Outsourcing Contracts in Services – Boon or Bane to Emerging Market Vendor Firms?

Build-operate-transfer (BOT) contracting has been widely used in the engineering and construction industry and has recently spread into the service industry domains. Notably, service provider firms from emerging markets, India in particular, are now offering BOT outsourcing contracts in which the client firms are allotted call options, i.e. the right, but not the obligation, to transfer pre-specified assets from the service provider. As such, BOT outsourcing contracts seems to be an interesting contractual novelty that combines the advantages of outsourced and captive offshoring operations. In this paper we investigate under which circumstances a BOT outsourcing contract (i.e. a contract where the client firm exercises its call option) is beneficial, or the opposite, to the emerging market vendor firm. Whether BOT outsourcing contracts are boon or bane to an emerging market vendor basically hinges, we submit, on its internal diffusion of client-specific knowledge and capabilities prior to the execution of the call option.     

The Influence of In‐Laws on Change in Marital Success

This study prospectively examines the association between discord with in‐laws and the long‐term relationship success of husbands and wives who had been married for an average of almost 2 decades. We hypothesized that the quality of spouses' relationships with their parents‐in‐law would predict spouses' marital success. In addition, this study underscores the causal role of in‐laws by examining the influence of marital success on relationships with in‐laws. For wives, discord with mothers‐ and fathers‐in‐law predicted own perceptions of marital success at a later time period. Results were slightly different for husbands' discord with fathers‐in‐law. The reverse (marital success predicting less discord with in‐laws) was only true for husbands. The study also explored the influence of spouses' discord with in‐laws on partners' perceptions of marital success. These are among the first prospective, longitudinal findings demonstrating that, even in long‐term marriages, conflicts in extended family relations will erode marital stability, satisfaction, and commitment over time.     

Recovering Information from Incremental Responses

Some yields analysed and reported in the literature have been adjusted by subtracting a control. It is found that full information can be recovered for estimable parameters and the error variance using these incremental responses, in comparison with unadjusted data. These findings are of practical importance, and they supplement materials usually found in a graduate course in linear inference. The issues are illustrated using a case study from the literature.     

Revisiting the flexibility and regularity properties of the asymptotically ideal production model

In this paper we estimate the flexibility properties and regular regions for the first three orders of the seminonparametric Asymptotically Ideal Model (AIM) under four different types of constant returns to scale production technologies. The AIM model's parameters are estimatedfrom a Monte Carlo simulation where the data is generated from a three input, one output, globally regular Constant Differences of Elasticity of Substitution function. The Monte Carlo's input quantity and elasticity of substitution estimates at the unit vector are graphed along with the area of the relative price space where the AIM model is monotonically increasing andquasi-concave.     

Operational Research changes: tales from a parallel universe

Operational research and statistics share many common features. A review of the historical development and of some current dilemmas in operational research is given, in the belief that the narrative will fulfil a wider purpose by causing statisticians to reflect on related aspects of the evolution of their own subject in a rapidly changing environment.