Alhaji Musa, the newly appointed Managing Director of Zenith Plastics Limited in Lagos, is reviewing the company's organisational structure. He notices that workers report to multiple supervisors across different functional departments. Which classical management principle is being violated in this arrangement?

Unity of command, one of Henri Fayol's 14 principles of management, stipulates that each employee should receive orders from only one superior. When workers report to multiple supervisors, this principle is violated, leading to confusion, conflicting instructions, and reduced accountability. The other options refer to different principles: division of labour concerns task specialisation, scalar chain refers to the hierarchy of authority, and esprit de corps relates to team spirit.