Related Experiment Video
Updated: Feb 3, 2026

Expansion of Two-dimension Electrospun Nanofiber Mats into Three-dimension Scaffolds
Published on: January 7, 2019
[Job rotation in beef packing operations: beyond the physical dimensions of work]
Adelaide Nascimento1, Iracimara Anchieta de Messias2
1Conservatoire National des Arts et Métiers, Paris, France.
Abstract:
Brazilian Regulation NR-36, specific to the slaughterhouse and meat packing industries, emphasizes the implementation of job turnover to reduce workers' exposure to repetitive and machine-controlled physical strain. However, studies have shown that the effects of such measures are generally less than expected, and that rotation alone is not the solution to work-related health problems. Based on a study performed in a beef packing plant, the article aims to present and discuss real work dimensions that are considered relevant to the plant workers' health and safety. Knowledge of such dimensions is important for the implementation of job rotation projects. The methodology included interviews with 16 volunteers divided into four groups. The focus group and collective confrontation techniques were used, drawing on videos of the work. The results pointed to dimensions already known in the literature, related to physical strain, the required skills, work pace, and insufficient time to perform quality work. New data appeared in relation to the work's heterogeneous specifications, representing a source of psychological pressure during work in the cattle slaughtering areas. These organizational dimensions impact workers' individual and collective activity as well as workplace health. In our view, and corroborating international studies, in addition to the work's physical dimensions, organizational, human, strategic, and pedagogical aspects should be considered in projects involving the implementation of job rotation.
Related Concept Videos
Physical and Chemical Properties of Matter
Support Reactions in Three Dimensions
Ball and Socket Joint is one of the supports allowing free rotation about any axis. This freedom of rotation is...
Relative Velocity in One Dimension
Relative Velocity in Two Dimensions
Dimensions of Health and Illness
Equations of Equilibrium in Three Dimensions
According to the vector equations of equilibrium, the vector sum of all the external forces acting on a body must...

