“Do MORMONs have to ‘work’ to be assured of entering Heaven?”
No!
Like you, we enter Heaven because Jesus Christ paid the price for us.
After getting to Heaven the Lord uses our work history to decide how much responsibility you can handle and which job you are fit to do.
So you publicly disavow the words of the early church leaders.
They succeeded in killing Joseph, but he had finished his work.He was a servant of God, and gave us the Book of Mormon.He said the Bible was right in the main, but, through the translators and others, many precious portions were suppressed, and several other portions were wrongly translated; and now his testimony is in force, for he has sealed it with his blood.As I have frequently told them, no man in this dispensation will enter the courts of heaven, without the approbation of the Prophet Joseph Smith, Jun.Who has made this so?Have I?Have this people?Have the world?No; but the Lord Jehovah has decreed it.If I ever pass into the heavenly courts, it will be by the consent of the Prophet Joseph.If you ever pass through the gates into the Holy City, you will do so upon his certificate that you are worthy to pass.Can you pass without his inspection?No; neither can any person in this dispensation, which is the dispensation of the fulness of times.In this generation, and in all the generations that are to come, everyone will have to undergo the scrutiny of this Prophet.They say that they killed Joseph, and they will yet come with their hats under their arms and bend to him; but what good will it do them, unless they repent?They can come in a certain way and find favor, but will they?
Which 'level' of heaven do you think YOU are going to end up on?
Celestial?
Telestial??
Terrestrial???
Joseph Fielding Smith taught...
"This earth will become a celestial kingdom when it is sanctified.
Those who enter the terrestrial kingdom will have to go to some other sphere which will be prepared for them.
Those who enter the telestial kingdom, likewise will have to go to some earth which is prepared for them, and there will be another place which is hell where the devil and those who are punished to go with him will dwell.
Of course, those who enter the telestial kingdom, and those who enter the terrestrial kingdom will have the eternal punishment which will come to them in knowing that they might, if they had kept the commandments of the Lord, have returned to his presence as his sons and his daughters.
This will be a torment to them, and in that sense it will be hell." (Answers to Gospel Questions, v. 2, p. 210)
The entry in the Encyclopedia of Mormonism on "Damnation" essentially explains that the bottom two kingdoms of heaven are kingdoms of damnation:
"Just as there are varying degrees and types of salvation, coupled with eternal progression in some areas (D&C 76:96-98; 131:1-4), so are there varying degrees and types of damnation. In LDS doctrine, to be damned means to be stopped, blocked, or limited in one's progress. Individuals are damned whenever they are prevented from reaching their full potential as children of God. Damnation is falling short of what one might have enjoyed if one had received and been faithful to the whole law of the gospel. In this sense, all who do not achieve the highest degree of the Celestial Kingdom are damned, even though they are saved in some degree of glory."