What this means in practice
Routine work share is one of the inputs in the public rollup formula. It captures how much of a job can be written down as a procedure — if-then rules, standard forms, fixed sequences — because procedural work is what software absorbs most readily.
Payroll and Timekeeping Clerks have a high routine share: wage computation and paycheck processing follow explicit rules. Construction Managers have a low one: every site, crew, and weather delay is different. The metric helps explain why two office jobs can diverge sharply in pressure.