Adjective
work-intensive (comparative more work-intensive, superlative most work-intensive)
Focusing on, requiring, or exacting a great deal of work or effort; worksome; labour-intensive.
Throughout the century, many industries shifted away from work-intensive activities into more high-tech and service industry areas. Source: Internet
The most difficult and work-intensive part of the process, however, was the production of wrought iron done in finery forges in Sweden. Source: Internet
Throughout the century, many industries shifted away from work-intensive activities into more high-technology and service-industry knowledge-based areas. Source: Internet