This table presents 3 indexes showing the development of labour input in the sector of construction: Number of persons employed, the hours worked and the wages and salaries. The number of person employed shows the development of employment in Construction. It can be defined as the total number of persons who work in the observation unit as well as persons who work outside the unit who belong to it and are paid by it. The hours worked show the development in the volume of work. The total number of hours worked represents the aggregate number of hours actually worked for the output of the observation unit during the reference period. The wages and salaries index approximate the development of the wage and salaries bill. Wages and salaries are defined as the total remuneration, in cash or in kind, payable to all persons counted on the payroll (including home workers), in return for work done during the accounting period, regardless of whether it is paid on the basis of working time, output or piecework and whether it is paid regularly. The construction sector corresponds to the NACE Rev. 2 section F. The indexes are presented in calendar and seasonally adjusted form.