The list of 5Ss, although it looks like a housekeeping directive, supports lean production by:

a. identifying non-value items and removing them, in the "sort/segregate" category.
b. reducing inventory, in the "standardize" category.
c. increasing variability through standardized procedures, in the "standardize" category.
d. eliminating wasted motion through ergonomic studies, in the "support" category.
e. building good safety practices, in the "shine/sweep" category.