If a rusty airline pilot has been laid off for a year - what has he to do in order to take command again ?
The procedure is pretty standard across the industry. It will vary if it's the same employer or a new one only in having to learn new SOP's in the latter case. Otherwise;
1. Company induction course including SOP's and Standard Emergency Procedures (Dangerous goods renewal, CRM day, Fire Drills etc)
2. Sufficient time in a simulator to apply the SOP's and renew type rating and IR. Probably around four days at three to four hours per session.
3. Sufficient line training to ensure smooth and competent performance on the line concluding with a line check. Depends on the airline but maybe 12 to 20 sectors so 6 to 10 days of flying two sectors a day.
If not type rated then a full conversion course roughly along similar lines but expanded to incorporate training on the new type. Probably three to four months from induction to line check.