The Central Institute for Labour Protection – National Research Institute publishes an English-language scientific quarterly  the International Journal of Occupational Safety and Ergonomics (JOSE) with results of research studies from various countries as well as reviews of books, and information about seminars and conferences organised in Poland and abroad. The journal maintains its high quality by having all submissions reviewed by members of the International Editorial Board (50 members from 21 countries). JOSE is a delayed Open Access journal with articles more than one year old available free of charge.

CHIEF EDITOR Danuta Koradecka Central Institute for Labour Protection – National Research Institute ul. Czerniakowska 16 00-701 Warszawa, Poland
CO-EDITOR Waldemar Karwowski Industrial Engineering and Management Systems University of Central Florida Orlando, FL 32816-2993, USA		CO-EDITOR Jukka Takala Tampere University of Technology, P.O.Box 541, FI-33101 Tampere, Finland
MANAGING EDITOR Roman Broszkiewicz Central Institute for Labour Protection – National Research Institute ul. Czerniakowska 16 00-701 Warszawa, Poland

Published in cooperation with The International Ergonomics Association
Recognized by The International Labour Organization
Supported by The Ministry of Science and Higher Education of Poland

The International Journal of Occupational Safety and Ergonomics (JOSE) is published quarterly by the Central Institute for Labour Protection – National Research Institute, ul. Czerniakowska 16, 00-701 Warszawa, Poland,
phone (48) 22 623 46 42/21, fax (48) 22 623 36 93, e-mail: jose@ciop.pl

Abstracted or indexed by Social Sciences Citation Index^®, Journal Citation Reports/Social Sciences Edition, Social Scisearch^® of Thomson Reuters; Ergonomics Abstracts and Ergonomics Abstracts Online; CISDOC; OSH UPDATE; MEDLINE^®; Chemical Abstracts; Health and Safety Science Abstracts; INRS-BIBLIO; Index Copernicus; Elsevier Bibliographic Database Scopus.

Copyright © Central Institute for Labour Protection – National Research Institute, ul. Czerniakowska 16, 00-701 Warszawa, Poland. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording, or otherwise, without permission from the publisher.

Printed in Poland                                                                         ISSN 1080-3548