roy, if your day care business was opened in alaska, it is state law that carrying concealed is unlawful at a 'licensed day care facility', sometimes called 'licensed child care', and also lumped in with 'assisted living facility'.
whether or not the intent was to prohibit carry at day cares, assisted living homes, i do not know. the law itself is not clearly worded. but i would stay on the side of caution.
now, does the law apply to everyone or can the owner of such a business carry concealed? also unclear in the law. is open carry also prohibited?
lets take your example and go a different direction. suppose your business is a coffee/espresso cafe. you want to make it employee policy that no guns are allowed, and you also post signs indiciating your wish that your patrons also go unarmed.
you, being the business owner, are free to make any policy you wish. as your employee is free to find another job, your customers are free to find another espresso cafe, etc. gunowners are not a group protected from discrimination.
nancy smith does not HAVE to work for your day care. she CHOOSES to work there. she filled out an application. if you are any kind of boss, you have an employee handbook, and a sheet that your employees sign, indicating they ahve read the booklet, and are aware of all your guidelines, regulations, policies, etc.
it doesnt mean your employee will follow it, you simply have done your part.
when i got my ccw, my supervisor knew, because i told him. he is fine with it. at that time, there was a boss above him, i did not ever mention it to him, because he would not be okay with it. at that time, we had a handbook that explicitly forbid the possession of weapons in the workplace. and if i had a vehicle then, my supervisor would likely have encouraged me to leave it in the car.
now my new handbook doesnt even address a weapons policy. i think that is because it is a copy of the handbook our parent company wrote up, they are based in Chicago. their attorneys who wrote it probably never thought it would be an issue, since no civilian in chicago carries concealed.
one revision of the handbook (that was abandoned) had some strategic edits, to insert the adjective 'illegal' and 'unlawful' in front of each occurrence of 'weapon' (its an adjective, right? or a verb? i flunked english), i thought it made the handbook read easier.