There is a project that requires several trips over the course of a two month period. The employee has "blacked out" 5 weeks that they are unable to travel due to lack of childcare which will cause major project delays. Specific meetings have not been scheduled so the employee has not outright refused travel but we would like communicate that lack of childcare is not an acceptable reason for not traveling. All meetings are scheduled with a minimum of two weeks notice so adequate time is being given for arrangements to be made on the employee's part.
If they can not fulfill their commitment of travel when needed, then you give them their walking papers and wish them good luck.
It's not pleasant terminating an employee, but when it is stated (in writing) prior to hiring what is mandatory and the employee for whatever reason decides to not follow the requirements to keep the job, it's best they find employment elsewhere.
If she is not longer able to fulfill the duties of her position (provided not ADA or FMLA issue), then you have legitimate grounds to terminate.
If there is no extenuating circumstance, then simply explain the situation politely, but firmly. Travel is a requirement of the job. If this person cannot fulfill the requirements, then he/she needs to transfer to another position or resign. Refusing to travel is unacceptable.
If this person still refuses, then termination is an option. However, consult your attorney to make sure that everything is done properly.
I would write up this employee for missing required meetings and state in the write up that if any more are missed the employee will go on probation. If the employee then misses a third meeting -- termination.
Childcare is her problem, not yours.
She has several options...she can take the children with her and make arrangements with a local nanny service to have a caregiver come to the hotel....I have personally done this before and have a friend that does it for a living.
You are not legally required to accomodate her...she just doesn't want to pay for it, most likely.
I would tell her that she has to make a commitment with 72 hours of taking the required trips or she will be released from her employment.
That is NOT considered discrimination.