It depends. Assuming it is refrigerated in an airtight container, pasta sauce will keep for 5-7 days. Generally, refrigerated leftovers--such as lasagna, spaghetti and the like--should be consumed within 4 days. Do not repeatedly reheat items such as lasagna.
This special two-day program will teach you what the Service Contract Act's labor requirements are, when they are applicable, and how to efficiently incorporate them into your daily contracting activities.
Example of Modification under Common Law. A service contract falls under the common law; therefore both parties to a service contract usually need new consideration to modify the contract. Take this example: The activities committee at a college contracts with a famous comedian to perform a show at homecoming for $5,000.