title: Working at night and work ability among nursing personnel: when precarious employment makes the difference.
abstract: OBJECTIVE
  To test the association between night work and work ability, and verify whether the type of contractual employment has any influence over this association.
  
  
  METHODS
  Permanent workers (N = 642) and workers with precarious jobs (temporary contract or outsourced; N = 552) were interviewed and filled out questionnaires concerning work hours and work ability index. They were classified into: never worked at night, ex-night workers, currently working up to five nights, and currently working at least six nights/2-week span.
  
  
  RESULTS
  After adjusting for socio-demography and work variables, current night work was significantly associated with inadequate WAI (vs. day work with no experience in night work) only for precarious workers (OR 2.00, CI 1.01-3.95 and OR 1.85, CI 1.09-3.13 for those working up to five nights and those working at least six nights in 2 weeks, respectively).
  
  
  CONCLUSIONS
  Unequal opportunities at work and little experience in night work among precarious workers may explain their higher susceptibility to night work.
authors.affiliation: Laboratory of Health and Environment Education, Instituto Oswaldo Cruz, Fiocruz, Av. Brasil 4365, Manguinhos, Rio de Janeiro, RJ, 21045-900, Brazil. rotenber@ioc.fiocruz.br
authors.forename: Lucia
authors.initials: L
authors.lastname: Rotenberg
authors.forename: Rosane Harter
authors.initials: RH
authors.lastname: Griep
authors.forename: Frida Marina
authors.initials: FM
authors.lastname: Fischer
authors.forename: Maria de Jesus Mendes
authors.initials: Mde J
authors.lastname: Fonseca
authors.forename: Paul
authors.initials: P
authors.lastname: Landsbergis
mesh_terms: D000328:Adult; D003284:Contract Services; D004651:Employment / Q000145:classification* / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009726:Nurses; D009784:Occupational Diseases / Q000209:etiology / Q000503:physiopathology* / Q000523:psychology; D010561:Personnel Staffing and Scheduling; D011795:Surveys and Questionnaires; D014938:Work Capacity Evaluation; D014940:Work Schedule Tolerance / Q000502:physiology* / Q000523:psychology