One of the recent trends in recycling right now is all-in-one recycling. All the paper, plastic, glass, and metal waste goes into one recycle bin, which is sorted at the factory. The argument is that it requires fewer trucks to pick it all up.
Construction work is usually seasonal. Many crops can only be grown during specific times during the year. Retail clerk positions are often seasonal. Package delivery personnel are often hired during the holidays.
Some sign on for a limited number of hours during the summer - they are called seasonals. Others have permanent seasonal positions, and work 26 weeks with 26 weeks off. Others work full time, year around, but have limited appointments or a not to exceed time limit of one to four years.