What is the actual cost of a full-time, in-office assistant?
Assume a minimum of £12 per hour at 40 hours per week. Over the course of a year you're spending £23,040 on salary alone.
Add the cost of national insurance, company pension, employer's liability and other expenses or hiring an employee at approximately 50-60% of salary and you're spending about £31,104+ annually for your full-time, in-house employee.
Don't forget the less obvious, and difficult to quantify, expenses such as overhead related to time and money spent filling and training your position, the cost of computers and other office technology, office space, lunch hours, sick and holiday pay, and numerous wasted, non-productive hours on the clock.