Which method increases labor productivity according to Lean principles?

The method that increases labor productivity according to Lean principles is Kaizen. Kaizen, which translates to "continuous improvement," emphasizes making small, incremental changes that enhance processes, efficiency, and productivity over time. This approach engages all employees in identifying areas for improvement and encourages a culture where everyone contributes to refining work practices. The focus on continuous improvement leads to more efficient workflows, reduced waste, and ultimately higher productivity.

Kaizen promotes a systematic approach to problem-solving and optimization, making it a cornerstone of Lean methodology. By fostering an environment where workers feel empowered to suggest changes and improvements, organizations can unlock higher levels of engagement and productivity.

In contrast, while scientific management emphasizes optimizing performance through methods and techniques, it does not inherently focus on continuous improvement as a core principle, which is central to Lean. Mass production typically aims for high output in standardized processes, which may not align with Lean's focus on value and waste reduction. Lean in Service refers to applying Lean principles specifically in service-oriented organizations but does not inherently define a method for increasing labor productivity as effectively as Kaizen does.