Non-salary data referenced in this Salary Guide is based on an online survey developed by Robert Half and conducted by an independent research firm. During June and July 2024 Robert Half commissioned research amongst 750 respondents using an online data collection methodology. The respondents represent 250 hiring managers from the employer side and 500 workers in finance and accounting, IT and administrative, HR and customer support. Respondents are drawn from a sample of SMEs to large private, publicly listed and public sector organizations across the Netherlands.