The factors that affect worker productivity include

the extent to which workers are making branded or private$-$label shoes with superior materials and with S$/$Q ratings above $5$ stars, the size of the company's annual expenditures for maintenance of footwear$-$making equipment, and the extent to which a company's salaries for supervisors at a particular assembly facility are above$/$below the regional average.

the ratio of production workers to supervisors, the number of footwear models that production workers have to assemble, and how favorably a company's total compensation package for production workers compares with the compensation packages at rival companies with production facilities in the same region.

the size of annual base pay increases, how much the company spends annually for TQM$/$Six Sigma training to enhance worker skills, and whether the S$/$Q ratings of the footwear being produced are above or below $5\mathrm{.}0$ stars.

a ratio of production workers to supervisors that is above the regional average, the extent to which the percentage use of superior materials is above $50\%,$ and the total dollar amount the company spends on best practices training.

the number of models being produced and assembled at the production facility, whether production improvement option B has been installed, current$-$year expenditures for TQM$/$Six Sigma programs, and the total dollars of overtime pay that production workers receive.