Conflict of Interest with City Employees and City Schools -- even as a coach

This is from the Pittsburgh's City Charter:

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707. Multiple Employment

Prohibited

No person shall hold more than one compensated position in City government and no compensated city employee shall hold a compensated position in any other government except as follows:

a. Officer or member of the Pennsylvania National Guard or federal reserve:

b. The controller may also serve as controller for the city school district; and the deputy controller may also serve as deputy controller for the city school district.

c. A treasurer, or person serving in that capacity, may also serve as treasurer for the city school district.

d. Member or employee of any sinking fund commission or pension board.

e. Pittsburgh public school employees between the months of May and September of each year.

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Problem: City workers can not be part-time coaches on athletic teams in the city.