In manufacturing, control of ergonomic risks at manual workplaces
is a necessity commanded by legislation, care for health of
workers and economic considerations. Methods for estimating
ergonomic risks of workplaces are integrated into production routines
at most firms using the assembly-type of production. Assembly
line re-balancing, i.e., re-assignment of tasks to workers, is an
effective and, in case that no additional workstations are required,
inexpensive method to reduce ergonomic risks. In our article, we
show that even though most ergonomic risk estimation methods
involve nonlinear functions