A POSAC position is one which has the following in its employment contract

• Hours of work between the time of about 9am and 3pm Monday to Friday, approximately 27.5 to 32.5 hours per week. 9am to 3pm with a half hour lunch break equates to 27.5 hours per week. 8.30am to 3.30pm with a half hour lunch break equates to 32.5 hours.
• With at least six weeks' holiday per year, half of each holiday: 3 weeks in summer and one week in each of the three two week breaks. This would involve the standard 3 weeks paid holiday plus 3 weeks’ unpaid holiday. It would not require 6 weeks' paid holiday.
• With mutual flexibility in the above with regards to employee and employer needs. In this respect both parties need to be flexible for the sake of each other. If a child is sick, the employer allows time off (paid or unpaid), but if the child is sick for too long, then the employee finds childcare and returns to work. The employee should be prepared to make up time outside normal working hours. The employer should be prepared for sudden events requiring the employee to attend to children.