Quarterly Survey of 19,500 companies (6,500 companies per month). Labor costs reflects the cost to the employer of each employee, and includes not only the salary of the employee, but also other costs such as social security contributions, disability payments, redundancy payments, employee expenses and insurance. The industries included in the survey are those set out in sections C-K and M-O of the CNAE-09 Clasification of Economic Activities. Sections L, C and Q of the CNAE-09 Clasification are not included. All data prior to Q1 2009 are historical back estimates provided by the INE.