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.
Working at a beach resort may be a seasonal job, as they are more popular in the summer and not always open in the winter. Ski instructors will find plenty of work during the winter. Road crews work primarily in the summer.