For organizational productivity improvements to be effective and long lasting, they can't be randomly performed.
They must be:
Aligned to organizational goals and objectives
Holistic in nature, regarding analyzing all potential productivity options, selecting the mix that best supports organizational objectives, provides needed productivity gains, and doesn't cause productivity reducing side effects
Systematic through the creation and execution of formalized project plans and project management best practices
Measurable to illustrate tangible business benefits
Profitable by providing additional time, money and resources back to the organziation toward meeting organizational goals