To answer this metric you need to find the "Total number of employees" (GRI 102-8-a). Start by searching publicly available documents like Annual and CSR reports.
Once you have found the answer, add the total number without commas to the answer field. If the organization provides useful context to the answer, such as an explanation of how the data have been compiled, and assumptions made, copy-paste this in the Comments field alongside the page number where you found the answer. Select the 'Unknown' answer box if the company has not published the data.