I am almost permanently travelling around the country for work so my expenses are essential for travel /food/accommodation. As I can be away up to 6 nights a week the bill can be substantial. This was never an issue when expenses were paid weekly but now my employer has changed their expenses policy to only pay it monthly. I cannot afford to cover all these costs for a full month until we get paid. It could amount to over 50% of my wage and they are refusing to negotiate. I cannot find any specifics on this issue in employment law. Can anyone help?