The daily rate for housekeepers and maids in Boquete varies,
depending on whether they live-in, work full or part time, whether transportation is included or provided, whether or not they are expected to cook as well as clean, how many hours they work, whether you provide meals, etc. In general, the daily rate for non-live in, part time household help, is $12-$15 per day, for 6-8 hours. The government has established minimum hourly wage rates for household help, but these vary with location (and all of the other factors listed above).
I pay my part-time maid $10 for a four hour work day, twice a week. She walks to work (lives nearby) and leaves at lunch time, so I do not provide either transportation or meals. This is a bit above the standard wage, but--she is worth it!
One thing to be aware of: if you employ your person more than 16-18 hours a week, you are liable for social security, 13th month decimo wages, vacation, etc. If she becomes pregnant while she is working for you, you are liable for all sorts of other things, such as paid maternity leave and potentially medical bills if she experiences any complications as a result of working (and this can be her word against yours if it goes to the Ministry of Labor).
Always have a written contract with your housekeeper that includes the hours she/he works, duties, wage to be paid, any exclusions, how severance will be handled, etc. Have it signed and witnessed. Keep records of when she/he works, payment, etc. Better to be safe than sorry. In a labor dispute, the cards are heavily stacked in favor of the employee.