A union agreement is a legally binding document that outlines the terms and conditions of employment for a group of workers. Prenups (7 letters) is short for prenuptial agreements, which are contracts entered into by two people prior to marriage that outline how assets and liabilities will be divided in the event of a divorce. IDOS (4 letters) stands for International Domestic Operational Standards, which are standards set by the International Labour Organization to ensure fair working conditions and wages for domestic workers.