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The Daily Insight

Is offer letter mandatory in California?

Author

John Thompson

Published Apr 24, 2026

Every Employee Should Have Either An Employment Contract or Employee Offer Letter. A California employer should always require all employment contracts, including an employee letter offer of employment, and company policies to be signed BEFORE the new hire starts the first day of work.

How do I write an offer letter for a temporary job?

Dear [Candidate Name]: On behalf of [Company Name], I am pleased to offer you a temporary short-term position as [job title], expected to last from [beginning date] to [end date]. As we discussed, in this position your compensation will be $[amount] per hour.

Can you work without an offer letter?

No it is not advisable. Offer letter is a legal contract between the employer and employee mentioning the terms and conditions relating to work. For ex : Offer letter would specify working hours, legal provisions like Sick leaves, casual leaves etc, details of compensation and performance management.

Are temporary employees considered part-time?

Temporary employees may work full or part-time, and may work for more than one agency at a time. Although not typically eligible for company benefits, some temporary agencies offer health care and other benefits to their temp employees.

Do you have to post a job opening in California?

Although there is no specific duration a job must be posted, the general rule is that contractors must list employment openings with the appropriate employment delivery system concurrently with a contractor’s use of any other recruitment source or effort.

Is an offer letter a contract?

This term will likely prevent, in a dispute situation, the offer letter being construed as a contract. Most employees are hired simply with an offer letter. However, employees hired with an offer letter generally are required to sign non-solicitation and confidentiality agreements.

How long must a job be posted legally in California?

Not less than 10 days before every statewide election, every employer shall keep posted conspicuously at the place of work, if practicable, or elsewhere where it can be seen as employees come or go to their place of work, a notice setting forth the provisions of.

Is offer letter a contract?