Early employment contracts and options can have long term effects on a company, so there are numerous state and federal securities, employment and contract law issues to be considered in those early agreements. Getting qualified advice can be invaluable, even early on. Whatever you do, don't simply buy or download "standard" contracts from a website to use.
That being said, it sounds like you are simply looking for examples to review and not necessarily use them. I don't know of any standardized ones since employment law issues usually vary by state. Go to the SEC website www.sec.gov or any finance site and look up securities filings for companies in your industry. It takes time, but you can find copies of employment agreements, stock option agreements, and stock option plans filed as exhibits to various filings such as 8-K, 10-K, 10-Q, and others. You will see that there are many standard clauses and formats used, so that is probably the best way to get access to public examples.