【正确答案】[写作范文]
From the chart，it is clear that company A has an ascending trend to overwork as the days go towards the end of the week，while its attendance rate is fluctuating relatively regularly during the week with Monday and Friday，Tuesday and Thursday respectively the same．
The overwork state changes irregularly in company B with Monday the highest and Tuesday the lowest after which the overwork rate increases steadily．It is clear the attendance rate is stable during the whole week．
As to company C，its attendance rate is relatively stable expept a large drop on Wednesday while its overwork rate is fluctuating under 20%
From the above，we can see that people in company A enjoy a more stable working environment than those in company B and company C．