Quickbooks Desktop and Payroll Specialist

We have a company that only processes payroll for several of our departments. Some employees work across multiple departments. The purpose of this company is only to process payroll. At the end of each month, the profit and loss for the payroll company should equal zero. This company only processes payroll and should not make a profit or a loss. Every expense should be allocated to a department.

I need someone to help me with the following tasks:
– process weekly payroll based on varying amounts (our payroll fluctuates due to an employee’s performance). The amount will be submitted to you via email. Most employees are to be paid using Direct Deposit that is already configured in Quickbooks.
– submit all applicable state (our company is located in Louisiana) and federal (United States) tax payments and forms in a timely manner
– calculate and invoice the payroll amounts that each department must pay (this includes calculating the payroll taxes and other expense based on the hourly breakdown that each employee has in that department)
– break out the worker’s compensation that is owed to each department based on the hours that the employee worked for that department and send an invoice to each department
– break out the health insurance that is due to each department based on the hours each employee worked for that department and send an invoice to each department
– for any overhead expenses associated with this company, you should invoice each department proportionally using the total amount of payroll process for a department for the month. The invoices should be sent to the departments.

I am willing to hire an accountant for 8 hours per week. My expectation is that these tasks will take far less than 8 hours per week once you have developed your system. Once this system is flowing smoothly, we can discuss my other accounting needs that will fill the remaining time.