The factors that affect worker productivity include

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.

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.

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 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