Write the Topic Sentence of Each Paragraph

Write the topic sentence of each paragraph.
In the last century, the nature of work, along with Americans' attitudes toward work, has changed significantly.For one thing, work is now more mental, less physical, and a lot less dangerous than it used to be.According to economic historian Stuart Bruchey, from 1880 to 1900, about 35,000 workers a year were killed on the job, and 500,000 were injured in work-related accidents.Today, there are fewer dangerous jobs; even factories now use automated machines that have greatly reduced the risk of injury.In 1998, for example, only 5,100 workers were killed on the job.A second change has occurred in the number of hours worked.In the late nineteenth century, low-wage factory workers averaged about sixty hours a week on the job and worked six days a week, resting only on Sundays.At the same time, according to economist Dora Costa of MIT, the highest-paid 10 percent of workers worked about two hours less per day.Now, those numbers are almost reversed.Today's highest-paid 10 percent of employees work about 8.5 hours per day, and the lowest-paid work about 7.5 hours per day.One final change concerns workers' expectations about their jobs.In the late 1800s, most people expected work to give them little more than the means to feed their families.As a matter of fact, the typical 1888 worker spent 45 percent of his income on food.Today's workers, who spend only 14 percent of their income on food, have increased their expectations of their work.Now, workers want positions that do more than pay the bills.They also want work that is interesting, satisfying, and meaningful.