It depends on your job and what you got injured doing. If you did something stupid, then yes, you probably would have to take a personal day. But if it is a normal injury for the job, then probably not.
If you are hurt on the job you shouldn't have to use personal time, but file for workman's comp.
By "personal time" it will be assumed that you are actually at your place of employment, but on "break" time. They can if you are using their computer system or servers to access the net.
Use handwritten communications only when saying thank you to a personal customer, or giving your employees a compliment for a job well done. For all other communications use formal printed memo's.
Get a job
When you complete a job but use more time and effort then necessary you worked inefficiently.
He lacked the ability to be on his school's track team for his legs were badly injured in a car crash.
The driver was seriously injured in the crash.
Your boss will get really mad.
When you complete a job but use more time and effort than is necessary how have you worked.
When you complete a job but use more time and effort is truly necessary you have worked inefficiently.
Tom had to embazzle the group's money when he was out of job
A job. Most jobs will use these some time or another.