 Re: Invoicing disputes
Adam,
Whilst in a different field to you, we sometimes charge by hourly rate. This scenario of Clients disputing invoices or asking "how could it have taken that long", is one reason that I chose to move our business into a fixed fee model. This can have disadvantages, however for us, once the fee is set we can get on with the job and not worry about time. We just want to deliver a good result.
Your suggestion of using authorisations is worth looking at. You may also consider having a service agreement with larger or regular clients. This details all of the tasks you may do on-site and what category they come under, i.e. support, installation, warranty etc. You may alresdy have this.
Also, you may suggest each site has one or two people that are authorised to order and instruct your people. That way, you are no taking instructions from general staff who don't know the cost of your service or are experts at dragging you around the office fixing every little thing.
Have fun!
Brian.
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