I work in a specialised area and there are basically only about 4 companies who I can work for. One of these companies has now bought out one of the others - unfortunately the buyers are horrible, horrible bad payers and always have been - they lose invoices, change the payment dates, the person who signs the cheque 'is in a bad mood today/on holiday' etc. The company has changed hands about 4 times now and the 'new' owners claimed that there would not be any problems after the first late-payment-that-took-3-phone-calls-to-obtain. But what a surprise, the following month's money was late too (3 phonecalls) and so has this month's payment been.
I can't really afford to refuse to work for them any more because of the specialist nature of the work (and they pay a reasonable rate when they do pay up). It's just so miserably stressful every month, waiting for the payment - they should pay on the 10th according to their written terms and conditions, and my rent is due on the 16th, so I always have this agonzing few days of repeated phone calls and promises and it's making me feel quite ill. If I threaten to charge them for late payment, can I make it stick legally? Has anyone else ever managed to get a company like this to behave decently?