At my current position, company policy says we're not supposed to answer work calls after hours. We also have flexible schedules, but we have to notify supervis

At my current position, company policy says we're not supposed to answer work calls after hours. We also have flexible schedules, but we have to notify supervisors of the hours, preferably ahead of time. They use those hours to decide whether or not to contact us. They make it clear that if we are off work, we don't have to answer any calls or respond to texts. Luckily, my supervisors are all about the policy and don't contact us during non-working hours.