Business Employment Contract required

General information for the business: Financial Planning business needs an up to date employment contract for its staff
Kind of support: Legal
Description of support work: We have an existing employment contract and addendum that need bringing together and updating with latest legislation. We are a small business with 2 directors and 4 staff. We may also need to provide a letter which explains the changes to staff.
Extra notes: All staff work a 4 day week, no overtime paid
I would prefer that holidays are used or lost, no carry over or payment in lieu.