Dear Sunny
It is very simple. Person who has SUPERVISORY power in the organisation, given by the management, or else, if any employees are working under you, that means, under law, you can escape under the banner UNION and PROTECTION OF EMPLOYEE. Your say that you are expecting a promotion means there is something fishy role either by the management promoting you to a higher level OR you escape from union activities. Both are equally risky one. I can share example of many of my friends who continued to be in the same organisation for years together, never gets a promotion, even if according to their capabilities qualification the knowledge they gained they can work in the cadre of any SENIOR MANAGEMENT LEVEL. They still continue to work in the union and protect their employees and himself by parting with their knowledge in the labour law. I will advise if you are capable of working in supervisory/managerial level, world is open for you for a bright futrue, leaving aside all your union activities OR continue to proect your fellow employees leaving your expectation of promotion. Both are too good in the eyes of god.
Thks & Rgds
Vijayan Krishnan