This study is a prospective, multicenter study on patients with a diagnosis of NHL, MM or CLL. All the patients with a diagnosis of NHL, MM or CLL in the participant centers will be purposed to participate. Each patient included will have an interview with a clinical study technician or doctor of occupational medicine. A specific detailed questionnaire has been created for the study. It focuses on specialized professional careers to spread occupational exposures to nuisances (substances and agents) suspected of being associated with NHL, MM or LLC risk. Each questionnaire will be evaluated by a physician expert in occupational disease, to conclude on the parameters exposure to the various suspected carcinogens. The study will cover 300 patients.