This study assesses the effect of response-mode choices on response rates, and responsemode preferences of hard-to-survey populations: young adults, full-time workers, big city inhabitants, and non-Western immigrants. Using address-based sampling, a stratified sample of 3,496 households was selected. The first group of sample members was contacted face to face and could choose between a CAPI an...

BACKGROUND Workplace injuries are common, cause significant morbidity for workers and have considerable economic impact. General practitioners can play an important role in facilitating early return to work, improving outcomes for all parties. OBJECTIVE This article provides guiding principles for the initial assessment and early treatment phase of injury with a primary focus on the rehabilit...

Young women in South Africa experience high HIV and unintended pregnancy rates. Health care workers' (HCWs') opinions about sexual and reproductive health (SRH) issues impact young women's ability to access SRH services. We explored HCW opinions through interviews with a purposive sample of 29 HCWs in three primary health clinics in Soweto, South Africa and examined service availability through...

One hundred years after the Triangle Shirtwaist Factory fire in New York City that caused the death of 146 garment workers, a garment fire on November 24, 2012 in Bangladesh resulted in 111 deaths under remarkably similar circumstances. The majority of these workers were also young women, economically disadvantaged, migrants, and, by any definition, vulnerable. Fires have been a persistent prob...

This paper uses Regression Discontinuity Design to study the wage effects of a reform that introduced unjust dismissal costs for firms below 15 employees, while leaving firing costs unchanged for bigger firms. We address the endogeneity of the treatment status due to workers and firms sorting around the 15 employees threshold by applying IV techniques on a sample of exogenously displaced worker...

In social insects, cuticular hydrocarbons are involved in species, kin, caste and nestmate recognition. Gas chromatography and mass spectrometry were used to compare the cuticular hydrocarbon composition of workers, males and queens of Melipona bicolor. The cuticular hydrocarbon composition of this species was found to consist mainly of C23, C25:1, C25, C27:1, C27, C29:1 and C29, which are alre...

The intramandibular glands of workers and queens of Melipona quadrifasciata Lepeletier (Hymenoptera: Apidae), at different ages and from different functional groups, were studied using light and transmission electron microscopy. The results demonstrated that these glands are composed of two types of secretory structures: 1.A hypertrophied epidermis on the dorsal side of the mandible that is an ...

The study examined the utilization of information and communication technologies by agricultural extension workers in Niger State, Nigeria. To achieve the study objective, 206 respondents were proportionately and randomly selected from the three agricultural zones in the State through multi-stage sampling technique. Validated questionnaire with reliability coefficient of 0.81 was used to collec...

This paper investigates how the increasing labor supply of fresh graduates with modern IT (information technology) skills impacts the careers of incumbent workers during periods of fundamental technological change. To identify the causal effect within a difference-in-difference framework, we exploit a regulatory change in a mandatory German apprenticeship training regulation that obligated fres...

BACKGROUND Hispanic immigrant workers dominate California's hired farm workforce. Little is known about their health status; even less is known about those lacking employment authorization. METHODS The California Agricultural Workers Health Survey (CAWHS) was a statewide cross-sectional household survey conducted in 1999. Six hundred fifty-four workers completed in-person interviews, comprehe...