Cut costs vs Up efficiency

Recent news article speaks of this company whose employees are taking up cleaners' roles at work. I don't know how many cleaners this company hired (don't think even 10), but rather than firing cleaners (how much can you pay for a cleaner really), which possibly contributes to unemployment of the less-educated (jobs search already hard for those with tertiary education), and having employees (who essentially make the money for you) clean up the office (thus less time for effective work?), how about having some non-monetary incentives to increase the productivity of your employees, so they deliver twice as much work in the same amount of time?