Is your actually data one column that has the number and type of employee together like your crosstab ("1W") or two columns with the type and # split out seperately?
This will change your design a bit but here is how to handle it.
If it is two columns add another grouping to your rows in the crosstab as the "worker type" field then sum on the employees # field.
If it is one column you will need 2 make two formulas to split it apart. Then add the formula that has the type as your grouping and sum on the other.
I can't write the formulas unless I know the exact data set up but most like you will just be able to use a left(field,1) and a right(field,1) to split it up. If you need help with that please post some sample data.