Every employer having an office, factory, workshop, branch, warehouse or other place of business within the Municipality of Bethel Park, who employs one or more persons, other than domestic servants, for salary, wage, commission or other compensation, shall deduct, at the time of payment thereof, the tax imposed by this ordinance on the earned income due to his employee or employees who are subject to the levy thereof, and shall, on or before April 30 of the current year, July 31 of the current year, October 31 of the current year and January 31 of the succeeding year, file a return and pay to the Officer the amount of taxes deducted during the preceding three-month periods ending March 31 of the current year, June 30 of the current year, September 30 of the current year and December 31 of the current year, respectively. Such return, unless otherwise agreed upon between the Officer and employer, shall show the name and social security number of each such employee, the earned income of such employee during such preceding three-month period, the tax deducted therefrom, the political subdivisions imposing the tax upon such employee, the total earned income of all such employees during the preceding three-month period, and the total tax deducted therefor and paid with the return.