Employee costs in top Indian IT companies have increased over the last four years.Manpower-related costs make up 60% of IT service companies' expenses.Employee costs outpaced revenue growth for TCS, Wipro, and HCL Technologies between 2019-20 and 2022-23.Wage costs as a share of revenue have increased to 55.9% in 2022-23, which is the highest in the last five years for all firms except Infosys.