The document filled by a worker to record the starting and finishing time of his own operation is known as:

A. Job cost sheet
B. Completion of job sheet
C. Job time sheet
D. Job materials requisition sheet
E. Clock card

C. Job time sheet

Explanation:
The correct answer is option C, “Job time sheet.”
Explanation: A job time sheet is used to record the time spent on different jobs by an employee, indicating the start and finish times. It helps in tracking labour costs associated with specific tasks or jobs.