Employee flags

The EMP_FLAG field is a twenty-character field allowing for twenty general purpose employee flags with these characteristics:

The first character represents EMP_FLAG1, the second represents EMP_FLAG2, and so on.
Only flags that are used are required in the flag string value. For example, if five flags are required, the flag string should be as follows:
```
YNNYY
```
A space in one of the flag positions indicates that processing is not required for that flag. For example, if EMP_FLAG2 should not be processed, the flag string should be as follows:
```
 Y NYY
```
An ampersand (&) in one of the flag positions indicates that the flag should be empty. For example, if there should be no value in EMP_FLAG2, the flag string should be as follows:
```
Y&NYY
```